Explanation:
We are given: dosage = 35 mg/kg
: mass of a child = 29 kg
: mass per capsule = 250mg/capsule
We first determine the number of capsules per kg:
\(\begin{gathered} capsules\text{ per kg = }\frac{dosage}{mass\text{ per capsule}} \\ \\ \text{ = }\frac{35}{250} \\ \\ \text{ = 0.14 capsule/kg} \end{gathered}\)We then find the number of capsules for the child with the given mass:
\(\begin{gathered} no\text{ of capsules = caspsules per kg }\times mass\text{ of a child} \\ \\ \text{ = 0.14}\times29 \\ \\ \text{ = 4.06 capsules }\approx4\text{ capsules} \end{gathered}\)Answer:
The child must receive 4 capsules.
Scenario: You place a spoonful of frozen ice cream on your tongue a) Type of energy transfer b) Where will each form of transfer occur c) What will happen and why?
The type of energy transfer between the frozen ice cream and the tongue is convection. The frozen ice cream will gradually melt because of the temperature difference.
What is convection?Convection is the method of heat transfer that involves the transmission of heat in a fluid (liquid or gas) by the circulation of currents.
According to this question, a spoonful of frozen ice cream is placed on the tongue. The heat transfer will occur between the tongue with warmer temperature and the ice cream with colder temperature.
The heat energy will flow from the tongue to the ice cream, hence, making it defreeze or melt with time. This type of heat transfer is convection because it involves a fluid.
Learn more about convection at: https://brainly.com/question/4138428
#SPJ1
4. Kendrick drags his bat out to play baseball. which statement best describes the science of what he did?
O Kendrick would use less energy if he dragged the bat faster.
Kendrick did not have to work to move the bat because he dragged it.
Kindrick gave the bat potential energy.
Kindrick gave the bat kinetic energy.
Explanation:
Kendrick gave the bat potential Energy
Which of the following features of a 1H NMR spectrum give useful information about the structure of a compound? Choose all answers that apply.
----------------------------------------
The spin-spin splitting of signals
The number of the signals
The area under the signals
The signal distance above the baseline
The chemical shift of the signals
The number of the signals
The chemical shift of the signals.
The spin-spin splitting of signals.
Count how many signal sets you have.
• This will tell you how many types of hydrogen-bearing carbons you have. Hydrogens attached to symmetry-equivalent carbons will give equivalent signals) . If you have asymmetric looking signals, there is a good chance that two or more different
signal sets may be overlapping
Check the integration of each signal set.
• 3HCH3 group 2HCH2 group 1HCH or OH group.The above are true if there isn’t any accidental overlapping. Clean CH3 or CH2 signal sets will normally have reasonable shape symmetry.Effective recognition and integration of signal sets can help you know how many CH3’s and
CH2’s you have in your molecule
Check diagnostic “chemical shift” windows of the lines
• Use yes-or-no checklist regarding the presence of key functional groups.Things can get more complicated if two or more functional groups are both affecting a common
signal set.Chemical shift information can quickly tell you whether hydrogens are attached to arenas or
alkenes, and tell whether a CH2 or CH3 or CH signal set is attached to a single bond oxygens or
a carbonyl or an aromatic.
The splitting (number of lines) in each signal set
• The splitting provides information about what is connected to a given carbon
a. N lines N-1 “neighbor” H’s (when working from spectrum to structure)
b. N neighbors N+1 lines (when predicting spectrum from structure)
To know more about bond :
brainly.com/question/19331363
#SPJ4
Can you look at the picture Look at the picture ASAP and help please?
Answer:
Volume of the reaction vessel is increased - shift to the left
The reaction is cooled down - shift to the right
H2 is added to the system - shift to the right
The pressure of the system is decreased - shift to the left
A catalyst is added to the system - no change
Water is removed from the system - shift to the right
Explanation:
When a constraint such as a change in temperature, pressure or volume is imposed on a reaction system in equilibrium, the equilibrium position will shift in such a way as to annul the constraint.
When the volume of a reaction system is increased, the equilibrium position shifts in the direction in which there is the highest total volume. This is the left hand side.
Since the reaction is exothermic (heat is given out) when the reaction is cooled down, the forward reaction is favoured.
Adding of reactants shifts the equilibrium position to the right hand side hence when H2 is added, the equilibrium position shifts to the right.
Decreasing the pressure shifts the equilibrium position to the direction of higher total volume hence the equilibrium shifts to the left when pressure is decreased.
A catalyst has no effect on the equilibrium position. It increases the rate of forward and reverse reaction to the same extent hence the equilibrium position is unaffected.
Removal of water from the system increases the rate of forward reaction since a product is being removed from the reaction system.
Under business as usual (the starting scenario of DOCs), which of the following are the three current biggest sources of electrical energy? Select 3.
Question 2 options:
Nuclear Power
Hydroelectric
Natural Gas
Coal Power
Answer:
nuclear power, natrual gas , coal power
Explanation:
i took the quiz.
The most important part of the brain for an organism is the...
Answer:
its the lower brainstem
Explanation:
The lowest part of the brainstem, the medulla is the most vital part of the entire brain and contains important control centers for the heart and lungs.
most to least concentration in the troposphere: carbon monoxide, carbon dioxide, ozone, and hydroxyl radical
The correct arrangement on the basis of most to least concentration in troposphere will be: Cardon dioxide > Ozone > Carbon mono oxide > Hydroxyl radical.
In this lowest layer, the air is the densest. In actuality, the troposphere makes about 75 percent of the total weight of the atmosphere. The two most common gases are nitrogen (78%) and oxygen (21%), with argon (.9%) and a trace amount of hydrogen ozone (a kind of oxygen) making up the remaining 1% of all gases. The troposphere's temperature and water vapor concentration drop sharply with altitude.
Carbon monoxide background levels across the world vary from 0.06 to \(0.14 mg/m^3\) (0.05– 0.12 ppm).
About 3 billion metric tons of ozone are present in the atmosphere as a whole. Even while that may seem like a lot, the atmosphere only makes up 0.00006 percent of it.
The concentration of hydroxyl radical is the minimum.
For more questions on troposphere
https://brainly.com/question/1965467
#SPJ4
What changes sodium pellets to liquid
Answer:
when placed in water, a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms. chemical change = fire is a sign of chemical reaction.
Explanation:
When placed in water the sodium pellets catch the fire and liberate the hydrogen gas. On mixing with water solid sodium forms a colorless basic solution.
What are the properties of sodium?Sodium is a soft metal. It is a very reactive element with a low melting point. Sodium reacts very quickly with water, snow, and ice to produce sodium hydroxide and hydrogen. It is an alkali metal and the sixth most abundant metal on earth. It has a silvery white color.
It has a strong metallic luster. On reacting with oxygen it produces sodium oxide which on reacting with the water produces sodium hydroxide.
It is used to improve the structure of certain alloys and soaps. It is also used in the purification of metals. Sodium is also present in sodium chloride, an important compound found in the environment.
To learn more about sodium, refer to the link:
https://brainly.com/question/29327783
#SPJ2
The best type of graph to show how data changes over time would be:
Answer:
The answer would be a line graph because it is used to track changes over time.
Solve the problem.
A menu in a restaurant allows you to pick some items from Column A and some from
Column B. Column A has 24 items. Column B has 16 items. If you and 3 friends want
to order everything from both columns, but not order any item more than once, how
many items from each column would you each choose (assuming each person orders
the same number of items from each column)?
Select the correct answer.
4 from A, 4 from B
6 from A, 4 from B
6 from A, 6 from B
4 from A, 6 from B
Each person should choose 6 items from Column A and 4 items from Column B, ensuring that everyone orders the same number of items from each column. Option B
To divide the items evenly among four people while ensuring that each person orders the same number of items from each column, we need to find the common divisor of the number of items in each column.
Column A has 24 items, and Column B has 16 items. The common divisor of 24 and 16 is 8. Therefore, each person should choose 8 items.
Since there are 24 items in Column A, and each person needs to choose 8 items, the answer is 24 divided by 8, which equals 3. Each person should choose 3 items from Column A.
Similarly, since there are 16 items in Column B, and each person needs to choose 8 items, the answer is 16 divided by 8, which equals 2. Each person should choose 2 items from Column B.
Therefore, the correct answer is:
B) 6 from A, 4 from B
Each person should choose 6 items from Column A and 4 items from Column B, ensuring that everyone orders the same number of items from each column.
For more such questions on Column visit:
https://brainly.com/question/17532859
#SPJ8
Examples of radiation and how thermal energy is getting transferred 
What classifies a substance as an element?
What classifies a substance as a compound?
An element is a substance that cannot be broken down by chemical means. Elements are extremely particular compounds that serve as the foundation for all life and matter (well other than the stuff smaller than atoms). It can contain one atom or trillions of them for anything to be an element, however atoms of different types cannot be combined in. That is to say, every atom has a set number of protons, ranging from 1 to 118. You can be positive that the substance you have is hydrogen if there is just one proton present. Mercury is what you get if you have 80 protons. Atoms of pure hydrogen only contain one proton. As most people are aware, if you add oxygen to it, it turns into water, which is no longer an element but a compound. Nevertheless, the building blocks are the elements. Every single object you can see is composed of elements, whether there are many of them, as there are in the human body, or only a few, as there are in salt.
A compound is a substance with a definite composition (with some leeway there, there are 'non-stoichiometric' compounds), that is composed of 2 or more elements.
Further explanation:
A compound in chemistry is a material that is created by mixing two or more distinct chemical elements in such a way that the atoms of the various elements are kept together by strong chemical bonds. These bonds form as a result of the sharing or exchange of electron s among the atoms. A molecule is the smallest, unbreakable unit of a substance.
A mixture is not a compound since there is no bonding between the atoms of the constituent substances in a mixture. In certain cases, mixing dissimilar elements causes chemical reactions that result in the formation of bonds between the atoms and the molecules of a compound. Other possibilities allow mixing distinct components without causing a reaction, preserving the separate identities of the elements. When elements are combined, reactions can happen quickly or slowly (for example, when iron is exposed to oxygen) (as when lithium is exposed to oxygen). There are times when an element is introduced to a chemical, a reaction takes place, creating new compounds (as when pure elemental sodium is immersed in liquid water).
A compound frequently looks and acts quite different from any of the constituent parts. Think about hydrogen (H) and oxygen, for instance (O). At standard atmospheric pressure and room temperature, both of these substances are gases. However, they combine to form the well-known material known as water, which is a liquid at room temperature and at normal atmospheric pressure and whose molecules each contain two hydrogen atoms and one oxygen atom (H2O).
Few elements' atoms readily combine with those of other elements to produce compounds. These gases—helium, neon, argon, krypton, xenon, and radon—are referred to as noble or inert gases. Compounds made of certain elements can be formed easily with other elements. Examples include fluorine, chlorine, and oxygen.
2) The adjective compound refers to something that is made up of several different components. Examples of this usage include compound eyes, which are found in a variety of insects, compound microscopes, which are high-power magnifying devices made up of multiple lenses, compound sentences, which are organized collections of smaller sentences that form a single integrated perceptual environment, and compound documents.
White vinegar is a 5.0% by mass solution of acetic acid in water. If the density of white
vinegar is 1.007 g/cm3
, what is the pH?
The pH = 2.41
Further explanationGiven
5.0% by mass solution of acetic acid
the density of white vinegar is 1.007 g/cm3
Required
pH
Solution
Molarity of solution :
\(\tt M=\dfrac{\%mass\times \rho\times 10}{MW~acetic~acid}\\\\M=\dfrac{5\times 1.007\times 10}{60}\\\\M=0.839\)
Ka for acetic acid = 1.8 x 10⁻⁵
[H⁺] for weak acid :
\(\tt [H^+]=\sqrt{Ka.M}\)
Input the value :
\(\tt [H^+]=\sqrt{1.8\times 10^{-5}\times 0.839}\\\\(H^+]=0.00388=3.88\times 10^{-3}\\\\pH=3-log~3.88=2.41\)
White vinegar is a 5.0% by mass solution of acetic acid in water and if the density of white vinegar is 1.007 g/cm³ then the pH of solution is 4.8.
How we calculate pH?pH of any solution will be calculated as:
pH = - log[H⁺], where
[H⁺] = concentration of H⁺ ions
In this question we will calculate the concentration of H⁺ ions as:
[H⁺] = √Ka.M, where
Ka = acid dissociation constant for acetic acid = 1.8 x 10⁻⁵ (known)
M is molarity and this can be calculated as:
M = (% mass × density × 10) / Molar mass of acid
Given that,
% mass = 5.0% by mass solution of acetic acid
density = 1.007 g/cm³
Molar mass of acetic acid = 60
Now putting all these values on the above equation, we get
M = (5 × 1.007 × 10) / 60 = 0.839
Now, we calculate the concentration of H⁺ ions by putting values on that equation as:
[H⁺] = √(1.8 x 10⁻⁵)(0.839)
[H⁺] = 1.5 x 10⁻⁵
So, pH of the solution will be calculated as:
pH = -log(1.5 x 10⁻⁵)
pH = -(-4.8)
pH = 4.8
Hence, pH is 4.8.
To know more about pH, visit the below link:
https://brainly.com/question/10313314
How many moles of each substance is produced when 7 moles of ammonium carbonate decompose?
(NH4)2CO3(s) ⟶ NH3(g) + CO2(g) + H2O(g)
Answer:
1. 14 moles of NH3 were produced.
2. 7 moles of CO2 were produced.
3. 7 moles of H2O were produced.
Explanation:
We'll begin by writing a balanced equation for the decomposition of ammonium carbonate, (NH4)2CO3.
This is illustrated below:
(NH4)2CO3(s) —> NH3(g) + CO2(g) + H2O(g)
There are 2 atoms of N on the left side and 1 atom on the right side. It can be balance by putting 2 in front of NH3 as shown below:
(NH4)2CO3(s) —> 2NH3(g) + CO2(g) + H2O(g)
Now the equation is balanced.
From the balanced equation above,
1 mole of (NH4)2CO3 decompose to produce 2 moles of NH3, 1 mole of CO2 and 1 mole of H2O.
1. Determination of the number of mole of NH3 produced.
From the balanced equation above,
1 mole of (NH4)2CO3 decompose to produce 2 moles of NH3.
Therefore, 7 moles of (NH4)2CO3 will decompose to produce = 7 × 2 = 14 moles of NH3.
Therefore, 14 moles of NH3 were produced.
2. Determination of the number of mole CO2 produced.
From the balanced equation above,
1 mole of (NH4)2CO3 decompose to produce 1 mole of CO2.
Therefore, 7 moles of (NH4)2CO3 will also decompose to produce 7 moles of CO2.
Therefore, 7 moles of CO2 were produced.
3. Determination of the number of mole of H2O produced.
From the balanced equation above,
1 mole of (NH4)2CO3 decompose to produce 1 mole of H2O.
Therefore, 7 moles of (NH4)2CO3 will also decompose to produce 7 moles of H2O.
Therefore, 7 moles of H2O were produced.
Use the periodic table or graphic in lesson. Choose the correct electron configuration of carbon. 1s 22s 22p 4 1s 22s 22p 2 1s 22s 22p 1 1s 22s 12p 2
The Correct electron configuration of carbon as 1s² 2s² 2p². Option B.
To understand why this is the correct electron configuration, let's break it down step by step:
The atomic number of carbon is 6, which means it has six electrons. Electrons are distributed in energy levels or shells around the nucleus.
The first shell, known as the 1s orbital, can hold a maximum of 2 electrons. Therefore, the first part of the electron configuration is 1s², indicating that two electrons occupy the 1s orbital.
The second shell has two subshells: the 2s orbital and the 2p orbital. The 2s orbital can hold a maximum of 2 electrons, while the 2p orbital can hold a maximum of 6 electrons. In the case of carbon, after the 1s orbital, two more electrons occupy the 2s orbital. So far, we have 1s² 2s².
The remaining two electrons in carbon are placed in the 2p orbital. The 2p orbital consists of three separate p orbitals: 2px, 2py, and 2pz. Each p orbital can hold a maximum of 2 electrons. Therefore, the last part of the electron configuration for carbon is 2p², indicating that two electrons occupy the 2px and 2py orbitals. Option B is correct.
For more such question on electron. visit :
https://brainly.com/question/28420589
#SPJ8
Which of the following physical properties would be expected to decrease as intermolecular forces increase? A. critical temperature B. boiling point C. vapor pressure
D. heat of vaporization E. none of these properties would decrease
On decreasing the intermolecular forces, the critical temperature increases. So, option A is correct.
Critical temperature is the temperature above which a gas cannot be get liquified. Now, by this hypothesis we mean that the molecules of the gas come closer to each other and thus molecules attract towards each other. Intermolecular forces hold the molecules to each other . They are responsible for keeping a solid a solid and a liquid a liquid. With weak IMF the material remains a gas, like oxygen and nitrogen in our air. The greater force that is applied, the more energy is needed to separate the molecules.
So, more the magnitude of intermolecular force more will be the tendency of a gas to get easily liquify and the critical temperature will substantially get increased
To know more about critical temperature, please refer,
https://brainly.com/question/25997365
#SPJ4
How many aluminums are in the chemical formula of 2AI²(S0³)³?
Answer:
4
General Formulas and Concepts:
Chemistry
Identifying Moles/Atoms and CompoundsExplanation:
Step 1: Define
Al₂(SO₃)₃ - Aluminum Sulfide
2Al₂(SO₃)₃
Step 2: Identify
In Aluminum Sulfide, we have 2 Al's for every 3 SO₃²⁻'s.
So far, we have 2 Al's in total.
BUT, since we have a 2 coefficient in 2Al₂(SO₃)₃, we need to multiply by 2.
Therefore, we have 4 Al's in total.
Why do gases spread throughout the air, but liquids or solids stay together?
Answer:
In gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.
Explanation:
What limitations occurs for chalk in vinegar chemistry pd lab experiment?
Also the precautions to take
Need this asap!!
Answer:
When conducting a chemistry lab experiment using chalk (calcium carbonate) in vinegar (acetic acid), there are several limitations and precautions to be aware of:
Limitations of chalk in vinegar chemistry experiment:
Reaction rate: The reaction between chalk and vinegar is relatively slow, which may require a longer observation period or higher concentration of vinegar to observe significant changes within a reasonable time frame.
Solubility: Chalk may not dissolve completely in vinegar, resulting in incomplete reaction or difficulty in obtaining accurate results.
Product formation: The reaction between chalk and vinegar produces carbon dioxide gas, water, and calcium acetate. The carbon dioxide gas may escape into the atmosphere, leading to loss of product and inaccurate measurements.
pH: Chalk is a basic substance, and the reaction with vinegar, which is acidic, may result in neutralization, leading to a decrease in the overall acidity of the reaction mixture.
Precautions to take in chalk in vinegar chemistry experiment:
Ventilation: The reaction between chalk and vinegar produces carbon dioxide gas, which can displace air and potentially cause asphyxiation in a closed or poorly ventilated area. Conduct the experiment in a well-ventilated area or under a fume hood to ensure adequate air circulation.
Eye and skin protection: Vinegar is an acid and can cause skin and eye irritation. Wear appropriate personal protective equipment (PPE), such as gloves and goggles, to protect yourself from contact with vinegar or any other chemicals used in the experiment.
Chemical handling: Handle the chemicals, including chalk and vinegar, with care, following proper lab safety protocols. Avoid ingestion, inhalation, or direct contact with the chemicals, and dispose of them properly according to local regulations.
Accuracy in measurements: Use calibrated and accurate measuring tools, such as graduated cylinders or burettes, to measure the amount of chalk, vinegar, and other reagents accurately. This will ensure the reliability and accuracy of the experimental results.
Observations: Make careful and detailed observations during the experiment, noting any changes in appearance, gas evolution, or other relevant observations. Take measurements at appropriate intervals and record the data accurately for analysis and interpretation.
It is important to follow good laboratory practices, including proper chemical handling, accurate measurements, and cautious observations, to ensure safe and reliable results in a chalk in vinegar chemistry lab experiment. Consult with a qualified instructor or supervisor for specific guidelines and precautions related to your experiment.
Drag the tiles to the correct locations on the equation. Not all tiles will be used.
Two atoms interact with each other and change as shown by the equation. Complete the equation by filling in the missing parts.
5
2
4
3
1
H+H -
H
He
Li
+
The equation in the question is: H+H → H + H Complete the equation by filling in the missing parts. missing part is 1 → H+H-2 → →3 → He.
The atomic number of hydrogen is 1, which means it has only one proton in the nucleus and one electron in its shell. Two hydrogen atoms react with each other to form helium. Helium has 2 protons and 2 neutrons in its nucleus and two electrons in its shell. Therefore, the equation is:
H + H → HeIt can be seen that:1. H + H (Reactants)
2. → (Yields or Reacts to form)
3. He (Product)Therefore, the tiles will be arranged as shown below: 1 → H+H-2 → →3 → He
For more question atomic number
https://brainly.com/question/16858932
#SPJ8
NEED HELP FAST
All living and nonliving things are made up of a combination of ______________.
Elements
Liquids
Crystals
Oxygen
Answer:
elements bruh
Explanation:
The element potassium, if capable of forming an ionic compound with another element, is most likely to
Answer: Iodine and potassium form an ionic bond. Iodine has seven electrons in its outer shell, and potassium has one electron in its outer shell. Ionic compounds generally form between elements that are metals and elements that are nonmetals. For example, the metal calcium (Ca) and the nonmetal chlorine (Cl) form the ionic compound calcium chloride (CaCl2).Apr 14, 2020
A vertical column of elements in the periodic table is called a
.
A horizontal row of elements in the periodic table is called a
.
Atoms of elements in the same group have the same
.
As you move from left to right on the periodic table, the atomic number
Answer:
A. group
B. period
C. numbers of valence electrons
B. increases
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.57 nm. It then gives off a photon having a wavelength of 954.3 nm. What is the final state of the hydrogen atom? Values for physical constants can be found in g
Answer:
the final state of the hydrogen atom = 3
Explanation:
From the given information;
Let first calculate the amount of energy by the ground state atom during the atoms absorbs photon light by using the formula:
\(E_{absorbs} = \dfrac{hc}{\lambda}\)
where;
h = planck's constant = \(6.626*10^{-34 }\ \ Js\)
c = speed of light = \(3.0*10^8 \ \ m/s\)
λ = wavelength = 92.57 nm = 92.57 × 10⁻⁹ m
\(E_{absorbs} = \dfrac{6.626*10^{-34 }\ \ Js * 3.0*10^8 \ \ m/s}{92.57*10^{-9} \ \ m}\)
\(E_{absorbs} = 2.15 *10^{-18} \ J\)
The energy emitted by the hydrogen atom is calculated by using the same formula from above ; but here , the wavelength λ = 954.3 nm = 954.3 × 10⁻⁹ m
\(E_{absorbs} = \dfrac{6.626*10^{-34 }\ \ Js * 3.0*10^8 \ \ m/s}{954.3*10^{-9} \ \ m}\)
\(E_{absorbs} = 2.08 *10^{-19} \ J\)
The change in the energy absorbed is:
\(\Delta E= 2.15 *10^{-18} \ J - 2.08 *10^{-19} \ J\)
\(\Delta E= 1.94 *10^{-18} \ J\)
The final state of the atom can be determined by using the relation:
\(\Delta E = R_H [\dfrac{1}{1^2}-\dfrac{1}{n^2_f}]\)
where;
\(R_H\) = Rydberg constant = 2.18 × 10⁻¹⁸ J
\(\dfrac{\Delta E}{R_H} = [\dfrac{1}{1^2}-\dfrac{1}{n^2_f}] \\ \\ \\ \dfrac{1.94*10^{-18} \ J}{2.18*10^{-18} \ J } = [\dfrac{1}{1^2}-\dfrac{1}{n^2_f}] \\ \\ \\ 0.889 = [\dfrac{1}{1^2}-\dfrac{1}{n^2_f}] \\ \\ \\ 1 - 0.889 = \dfrac{1}{n^2_f} \\ \\ \\ 0.111= \dfrac{1}{n^2_f} \\ \\ \\ {n^2_f} = \dfrac{1}{0.111} \\ \\ \\ {n^2_f} = 9 \\ \\ \\ {n_f} = \sqrt{9} \\ \\ \\ \mathbf{n_f = 3}\)
Thus; the final state of the hydrogen atom = 3
\(E_a_b_s_o_r_b_e_d = (6.626 * 10^-^3^4 J.s) * (3.00 * 10^8 m/s) / (92.57 *10^-^9 m)\)We can use the fact that the energy of the photon is given by the equation: to determine the final position of the hydrogen atom.
E = hc / λ
Where:
E is the energy of the photon,
h is Planck's constant \((6.626 * 10^-^3^4 J.s)\),
c is the speed of light in a vacuum \((3.00 * 10^8 m/s)\), and
λ is the wavelength of the photon.
Let's first determine the energy of the absorbed photon:
\(E_a_b_s_o_r_b_e_d = hc /\)λ\(_a_b_s_o_r_b_e_d\)
\(E_a_b_s_o_r_b_e_d = (6.626 * 10^-^3^4 J.s) * (3.00 * 10^8 m/s) / (92.57 *10^-^9 m)\)
The energy of the photon released will then be determined by:
\(E_e_m_i_t_t_e_d = hc\) / λ\(_e_m_i_t_t_e_d\)
E\(_e_m_i_t_t_e_d\) = \((6.626 * 10^-^3^4 J.s) * (3.00 * 10^8 m/s) / (945.3 *10^-^9 m)\)
The energy difference between the absorbed and released photons must now be determined:
ΔE = \(E_e_m_i_t_t_e_d - E_a_b_s_o_r_b_e_d\)
The energy levels of hydrogen are given by the equation:
ΔE = -13.6 eV *\((1 / n^2_f_i_n_a_l - 1 / n^2_i_n_i_t_i_a_l)\)
Where
\(n_f_i_n_a_l\) and \(n_i_n_i_t_i_a_l\) are the principal quantum numbers of the final and initial states, respectively, and -13.6 eV is the ionization energy of hydrogen.
Learn more about energy levels, here:
https://brainly.com/question/30546209
#SPJ6
Define biotechnology. } List two advantages in the use of biotechnology
Biotechnology is the use of living organisms or other biological systems in the manufacture of drugs or other products or for environmental management, as in waste recycling: includes the use of bioreactors in manufacturing, microorganisms to degrade oil slicks or organic waste, genetically engineered bacteria to produce human hormones, and monoclonal antibodies to identify antigens.
Biotech offers the possibility of improving human health, the environment, and agriculture while creating more sustainable modes of production.
6) Which of the following soutes would cause the greatest increase in the boiling point of
water? Explain your answer thoroughly
SIO vs Kl vs CaCl₂
When a solute is dissolved in a solvent, the resulting solution will have a higher boiling point than the pure solvent. The extent to which the boiling point is increased is dependent on the concentration of the solute and the type of solute.
In general, non-volatile solutes that have high molecular weights and strong intermolecular forces will cause a greater increase in the boiling point of a solvent than solutes that are volatile or have low molecular weights and weak intermolecular forces.
With this in mind, of the three solutes you listed, calcium chloride (CaCl₂) would cause the greatest increase in the boiling point of water. Calcium chloride is a non-volatile solute with a high molecular weight and strong ionic bonds, which contribute to its ability to increase the boiling point of water.
In contrast, sodium iodide (NaI) is a volatile solute with low molecular weight and relatively weak intermolecular forces, so it would cause a relatively small increase in the boiling point of water.
Potassium chloride (KCl) is also a non-volatile solute with a high molecular weight and strong ionic bonds. However, it would still cause a slightly smaller increase in the boiling point of water than calcium chloride because calcium chloride has a higher molecular weight and stronger intermolecular forces.
Learn more about Intermolecular Forces here: https://brainly.com/question/9328418
Venus's atmosphere, while primarily CO2, is also 3.5% nitrogen gas (i.e. mole fraction of 0.035). What is the partial pressure of nitrogen on Venus in kPa given that the total atmospheric pressure is 1334 psi?
The partial pressure of nitrogen on Venus is approximately 321.914 kPa.
To find the partial pressure of nitrogen on Venus, we need to calculate the partial pressure using the mole fraction of nitrogen and the total atmospheric pressure. First, we convert the total atmospheric pressure from psi to kilopascals (kPa) since the mole fraction is given in terms of kPa.
1 psi = 6.89476 kPa
Therefore, the total atmospheric pressure on Venus is:
1334 psi × 6.89476 kPa/psi = 9197.53 kPa
Next, we can calculate the partial pressure of nitrogen using the mole fraction. The mole fraction of nitrogen is given as 0.035, which means that nitrogen makes up 3.5% of the total moles of gas in the atmosphere.
The partial pressure of nitrogen is given by:
Partial pressure of nitrogen = Mole fraction of nitrogen × Total atmospheric pressure
Partial pressure of nitrogen = 0.035 × 9197.53 kPa
Partial pressure of nitrogen = 321.914 kPa
Therefore, the partial pressure of nitrogen on Venus is approximately 321.914 kPa.
It's important to note that the given atmospheric composition of Venus's atmosphere and the total atmospheric pressure are approximate values and can vary depending on specific conditions and measurements.
For more such question on partial pressure visit:
https://brainly.com/question/19813237
#SPJ8
What is the atomic mass for calcium? show work
Ca is on the second column: it is highlighted with yellow, and its atomic mass is 40.08 AMU
Express the equilibrium constant for the following reaction.
6Na(s)+6H₂O(l)+⥂6NaOH (aq) +₃H₂(g)
K= [ Na ]⁶ [ H₂O ]⁶ / [ NaOH ]⁶ [ H₂ ] ³
K = [ H₂ ] [ NaOH ]⁻²
K = [ NaOH ] ¹/²[ H₂ ] / [ Na] ¹/² [ H₂O ]¹/²
K = [ NaOH ]⁶ [ H₂O ] ³ / [ Na ]⁶ [ H₂O ]⁶
K = [ H₂ ] ³ [ NaOH ]⁶
The equilibrium constant for the given reaction is:
K = [H₂]³[NaOH]⁶ (last option)
How do I determine the equilibrium constant?We know that equilibrium constant is defined as the ratio of the concentration of products raised to their coefficient to the ratio of the concentration of reactants raised to their coefficients.
However, equilibrium constant expression does not contains certain phases of a reaction. These includes:
Solid reatantsSolid productsLiquid or solvent reactantsLiquid or solvent productsAlso, equilibrium constant expression must contain the following if they appear in the reaction:
Gasous reactantsGasous productsAqueous reactantsAqueous products.With the above information, we can obtain the equilibrium constant for the given reaction as follow:
6Na(s) + 6H₂O(l)+⥂6NaOH (aq) + 3H₂(g)
Equilibrium constant, K = [H₂]³[NaOH]⁶
Thus, we can conclude that the correct answer to the question is:
K = [H₂]³[NaOH]⁶ (last option)
Learn more about equilibrium constant:
https://brainly.com/question/16589765
#SPJ1
What medal has the highest volume?
The Medal of Honor is the best navy decoration and highest volume.
The President of the USA The Victoria go is the holy grail for Medal of Honor creditors because there are the best in lifestyles. Bearing the inscription For valor and called a VC, this medal turned into first offered for conspicuous bravery' in 1856 and later backdated to the Crimean conflict of 1854. The outstanding service pass is the second maximum army ornament that may be provided to a member of the American military, for intense gallantry and risk of lifestyle in actual combat with an armed enemy force.
The Bronze Star Medal dates lower back to world battle II. these days, it is the fourth-maximum ranking award a provider member can obtain for a heroic and meritorious deed performed in an armed battle. For individuals who acquire the BSM, it's far a sign of their sacrifice, bravery, and honor at the same time as serving their us of a
Learn more about medals here:-https://brainly.com/question/17634999
#SPJ9