Answers
,Answer:
Fe(NO_3)_2
Explanation:
The compound iron (II) nitrate, Fe(NO₃)₂, consists of one iron atom, two nitrogen atoms, and six oxygen atoms.Thus, there are 6 moles of oxygen in 1 mole of iron (II) nitrate.
To determine the number of moles of oxygen in one mole of iron (II) nitrate, we need to find the molar ratio between oxygen and iron (II) nitrate.In one mole of iron (II) nitrate, there are 6 moles of oxygen atoms because each mole of Fe(NO₃)₂ contains 6 moles of oxygen atoms.
Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
Therefore, there are 6 moles of oxygen in 1 mole of iron (II) nitrate.
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Related Questions
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. Please clearly define the dependent and independent variables of the experiment.
Independent
Variable:
Dependent
Variable:
Answers
The experiment looks into how temperature impacts how quickly magnesium metal reacts with hydrochloric acid. The creation of hydrogen gas over time is used to determine the dependent variable, which is the reaction rate.
The experiment can be run at various temperatures to change the experiment's independent variable, which is the reaction mixture's temperature. Higher temperatures cause molecules to move more quickly, increasing the likelihood of reactant collisions and kinetic energy. By enabling more successful collisions between magnesium atoms and hydrochloric acid, can quicken the reaction and increase the amount of hydrogen gas produced. In contrast, it is anticipated that the reaction rate will be slower at lower temperatures since there will be less molecular mobility and fewer successful collisions.
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--The complete Question is, What is the effect of temperature on the rate of reaction between hydrochloric acid and magnesium metal?
The dependent variable in this experiment is the rate of reaction, which can be measured by monitoring the production of hydrogen gas over time. The independent variable is the temperature of the reaction mixture, which can be controlled and varied by conducting the experiment at different temperatures.--
You have two containers at 0°C and 1 atm. One has 22.4 L of hydrogen gas, and the other has 22.4 L of oxygen gas.
Which statement is true?
-))
A)
Both containers contain 6.022x1023 molecules of gas.
B)
B)
The hydrogen gas container has more molecules than the oxygen gas
container
The oxygen gas container has more molecules than the hydrogen gas
container
D)
Both containers have the same number of molecules.
Answers
Answer:
D
Explanation:
According to Avogadro's law, equal volumes of different gases at the same temperature and pressure have equal number of molecules.
It cannot however be a because according to ideal gas equation the number of moles in each container is 0.999moles which translates to 6.019*10^23 molecules
Answer:
Both containers have the same number of molecules.
Explanation:
Explain how the processes of photosynthesis and respiration are related to each other
Answers
Answer:
Explanation:
The end product of Photosynthesis is glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
A class observes two demonstrations water changing into steam and a piece of wood burning and producing smoke. A student concludes
that both demonstrations must be examples of a chemical change because a gas is produced in each.
is the student's conclusion accurate? Explain your answer, referring to both demonstrations.
WILL MARK BRIANLEST
Answers
Answer: The student's conclusion is inaccurate, smoke is a chemical change, but steam is a physical change.
Explanation:
When boiling water changes into steam, the matter composition of water is still the same (it remains H₂O). In this case, only the physical state of the water is changed from a liquid to a vapor (gas). When collected, the water vapor (gas) returns to its original liquid form proving that NO chemical reaction has taken place.
In contrast, a fire is a combustion chemical reaction that converts a fuel material (such as wood, fuel, or paper) and oxygen into carbon dioxide (CO₂) and water (H₂O). As an exothermic chemical reaction, the fire gives off heat in addition to the gaseous smoke. Unlike boiling, the fire permanently alters the fuel material as a result of the chemical reaction process.
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58.6 grams to milligrams
Answers
Answer: If you mean converting 58.6 grams to milligrams that would be 58600
Explanation:
What frequency corresponds to an absorption line at 460 nm?
A. 1.53 x 1014 Hz
B. 6.88 x 1014 Hz
C. 6.52 x 1014 Hz
D. 4.32 x 1014 Hz
Answers
Answer:
C. 6.52 x 10^14 Hz
Explanation:
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Examine the chemical equation and statement.
Mg+2HCl⇌MgCl2+H2
The reaction is at equilibrium. The forward reaction is endothermic, and the reverse reaction is exothermic.
Given a decrease in temperature, how would the reaction shift?
a. A decrease in temperature will cause the reaction to shift toward the endothermic reaction, which has the reactants MgCl2 and H2.
b. A decrease in temperature will cause the reaction to shift toward the endothermic reaction, which has the reactants Mg and HCl.
c. A decrease in temperature will cause the reaction to shift toward the exothermic reaction, which has the reactants Mg and HCl.
d. A decrease in temperature will cause the reaction to shift toward the exothermic reaction, which has the reactants MgCl2 and H2.
Answers
Answer:
d
Explanation:
the endothermic reaction absorbs heat and exothermic emits heat. If we think of this from increasing the temperature, exothermic already emits heat so it would favor an endothermic reaction. In this instance, a decrease in temperature would do the opposite, which would favor the exothermic reaction.
How many MOLES of sulfur
hexafluoride are present in
8.50x1022 molecules of this
compound ?
Answers
I need to know the IUPAC names of these two also using the cis trans prefixes
Answers
A. The IUPAC name of the compound is cis-2-pentene
B. The IUPAC name of the compound is trans-2-hexene
A. How do I determin the IUPAC name?The IUPAC name of the using the cis and trans prefixes can be obtained as follow:
Identify the functional group. In this case it is AlkeneIdentity the location of the double bond. In this case, it is located at carbon 2Locate the longest continuous chain. In this case it is 5. Thus, the parent name is penteneConsider the arangement of CH₃ and CH₂-CH₃ around the double bond. In this case, they are on the same side. Thus, the arrangement is cisThus, with the abbove information, the name of the compound is cis-2-pentene
B. A. How do I determin the IUPAC name?The IUPAC name of the using the cis and trans prefixes can be obtained as follow:
Identify the functional group. In this case it is AlkeneIdentity the location of the double bond. In this case, it is located at carbon 2Locate the longest continuous chain. In this case it is 6. Thus, the parent name is hexeneConsider the arangement of CH₃ and CH₂-CH₂-CH₃ around the double bond. In this case, they are on different side. Thus, the arrangement is transThus, with the abbove information, the name of the compound is trans-2-hexene
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what properties of a natural resource make it useful for humans as a materials or energy source?
Answers
The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.
What are natural resources?The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.
Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.
Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.
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In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor. hydrogen+oxygen⟶water
If you burn 46.2g of hydrogen and produce 413g of water, how much oxygen reacted?
mass of oxygen:
Answers
Answer:
ok, here is your answer
Explanation:
AI-generated answer
To find the mass of oxygen that reacted, we need to use the Law of Conservation of Mass, which states that in a chemical reaction, the mass of the reactants equals the mass of the products.
First, we need to find the number of moles of hydrogen that reacted:
Molar mass of hydrogen (H₂) = 2.016 g/mol
Number of moles of H₂ = mass/molar mass = 46.2 g/2.016 g/mol = 22.92 mol
Next, we need to use the balanced chemical equation to find the number of moles of water produced:
hydrogen + oxygen → water
2H₂ + O₂ → 2H₂O
From the equation, we can see that for every 2 moles of H₂, 1 mole of O₂ is required to produce 2 moles of H₂O. Therefore, the number of moles of O₂ required to produce 22.92 moles of H₂O is:
Number of moles of O₂ = 1/2 x 22.92 mol = 11.46 mol
Finally, we can find the mass of oxygen that reacted by using its molar mass:
Molar mass of oxygen (O₂) = 32.00 g/mol
Mass of oxygen = number of moles x molar mass = 11.46 mol x 32.00 g/mol = 366.72 g
Therefore, the mass of oxygen that reacted is 366.72 g.
mark me as brainliestwhat is the pH of a solution with a hydronium concentration of 6.5x10^-4M?
A.)6.5
B.)4
C.)3.2
D.)10
Answers
To determine the pH of a solution based on the hydronium ion concentration, you can use the equation:
pH = -log[H₃O⁺]
where [H₃O⁺] is the concentration of hydronium ions.
In this case, the hydronium ion concentration is 6.5x10^-4 M.
Calculating the pH:
pH = -log(6.5x10^-4)
= -log(6.5) - log(10^-4)
= -log(6.5) + 4
Using a calculator or logarithmic tables, you can find that the logarithm of 6.5 is approximately 0.81.
pH ≈ 0.81 + 4
pH ≈ 4.81
Rounding to the nearest whole number, the pH of the solution is approximately 5.
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Calculate the pH and percent ionization of a .780 M HNO2 solution.
Answers
Since [H2NO2] is equal to zero in this case, the percent ionization is equal to 100%.
What is ionization ?Ionization is the process of adding an electrical charge to a neutral atom or molecule, resulting in the formation of positively or negatively charged ions. The process involves the transfer of electrons from one atom or molecule to another, which can occur through chemical reactions, physical collisions, or exposure to radiation. Ionization is an important process in many fields, including chemistry, physics, and biology.
The pH of a .780 M HNO2 solution can be calculated using the Henderson-Hasselbalch equation. This equation states that the pH of a solution is equal to the pKa of the acid plus the logarithm of the base to acid ratio. In this case, the pKa of HNO2 is 3.4, so the pH is equal to 3.4 + log(.780/1) = 2.10.
The percent ionization of the solution can be calculated using the formula:
% ionization = ( [HNO2] - [H2NO2] ) / [HNO2] * 100
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which is the graph of the function g(x) = f(-x)
Answers
To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.
What is a graph of the function g(x) = f(-x)?To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.
If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).
However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.
In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.
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Which Sphere does condensation occur.
Answers
Answer:
The atmosphere, I believe.
Explanation:
What is the coefficient of HCl when the equation is balanced with smallest whole numbers?
MnO2 + HCl → MnCl2 + Cl2 + H2O
3
2
4
8
Answers
MnO2 + 4 HCl = MnCl2 + 2 H2O + Cl 2
what is the thing aroud the nucisel
Answers
Answer:
Electrons
Explanation:
Assuming you are talking about the nucleus of an atom, the particles surrounding the nucleus are electrons.
Atoms consist of three subatomic particles: protons, neutrons, and electrons. Protons and neutrons are located within the nucleus, whereas the electrons exist outside of it.
Can a chemical reaction be both exothermic and endothermic? Explain.
Answers
Answer:
It cannot be both, because the heat released or absorbed is also equal to the difference in total heat content of the reactants and products. So, it cannot be both.
Answer:
B
Explanation:
Which of the following nuclear reactions represents natural decay?
Answers
Radiation is produced when unstable or radioactive atoms through the process of becoming stable. We refer to this process as radioactive decay over time. Two protons and two neutrons are lost from the nucleus as a result of alpha decay.
What is nuclear decay reaction ?An unstable nucleus releases radiation and changes into the nucleus of one or more additional elements during a nuclear decay process, also known as radioactive decay.
The ensuing offspring nuclei are less energetic and heavier than the parent nucleus that underwent decay, making them more stable.
For example, by producing an alpha particle, the unstable uranium-238 nucleus naturally decays into a thorium-234 nucleus. The most prevalent radioactive decay processes are decay, emission, decay, positron emission, and electron capture.
Thus, Radiation is produced when unstable or radioactive atoms through the process of becoming stable.
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If an atom has an atomic number of 10 and an atomic mass number of 20, how many protons, neutrons, and electrons does it have?
Answers
A gas is heated from 246 K to 289 K while its volume is increased from 22.0 L to 30.5 L by moving a large piston within a cylinder. If the original pressure was 0.98 atm, what would be the final pressure?
Answers
To determine the final pressure of the gas, we can use the combined gas law equation:
P1 * V1 / T1 = P2 * V2 / T2
where:
P1 = initial pressure
V1 = initial volume
T1 = initial temperature
P2 = final pressure (what we want to find)
V2 = final volume
T2 = final temperature
Given:
P1 = 0.98 atm
V1 = 22.0 L
T1 = 246 K
V2 = 30.5 L
T2 = 289 K
Plugging in the values into the equation, we have:
0.98 atm * 22.0 L / 246 K = P2 * 30.5 L / 289 K
Now we can solve for P2:
P2 = (0.98 atm * 22.0 L * 289 K) / (246 K * 30.5 L)
P2 = 0.98 * 22.0 * 289 / (246 * 30.5)
P2 ≈ 0.998 atm
Therefore, the final pressure of the gas would be approximately 0.998 atm.
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Complete the following for the chemical formula: 5Ba(OH)2
Number of elements= ?
Number of subscripts= ?
Number of of atoms= ?
What is the coefficient?
A. 1
B. 3
C. 5
D. 15
Answers
Answer:
Number of elements= 2
Number of subscripts= 1
Number of of atoms= 5
What is the coefficient? - C. 5
Formation of crystals of sugar from a sugary syrup is a …….
chemical change
Answers
It's a chemical change.
Explanation:-
Formation of crystals of sugar from a sugary syrup is a chemical change. Because, we cannot get sugary syrup back from the sugar crystals. Yet, it is chemical change.
If Earth is in between the sun and the Moon in both Image 1 and Image 2, why do you think a lunar eclipse is only happening in Image 2?
Answers
Answer: do you want to become the best of friends well if you do all you have to do is say yes in the comments and ill give you the answer to your little problem here so all i want you to do is join this link tomorrow and come at 8:00 and zoom bomb my class this is the zoom link
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Ethylenediamine has pb values of 4.072 ( pb1 ) and 7.152 ( pb2 ).
predominant form of ethylenediamine at pH 6.184 - H+3NCH2CH2NH+3
Calculate the percentage of ethylenediamine in the predominant form at each pH.
pH 6.184
Answers
The percentage of ethylenediamine in the predominant form (H+3NCH2CH2NH+3) is 127.36%.
To determine the percentage of ethylenediamine in the predominant form at pH 6.184, we need to compare the pH with the pKa values of ethylenediamine (pb1 and pb2). The pKa values indicate the acidity or basicity of a molecule.
In this case, the predominant form of ethylenediamine at pH 6.184 is the protonated form (H+3NCH2CH2NH+3). To calculate the percentage, we can use the Henderson-Hasselbalch equation:
pH = pKa + log([A-]/[HA])
Since the predominant form is the protonated form, the concentration of the deprotonated form ([A-]) is negligible. Therefore, we can ignore it in the equation. The concentration of the protonated form ([HA]) is the percentage we are trying to calculate.
Let's calculate the percentage of ethylenediamine in the protonated form at pH 6.184 using the pKa value pb1 (4.072):
6.184 = 4.072 + log([A-]/[HA])
2.112 = log([A-]/[HA])
Now, we can convert this equation into the exponential form:
\(10^{2.112\) = [A-]/[HA]
Approximately,
127.36 = [A-]/[HA]
Since [A-] is negligible, we can assume it to be zero. Therefore, the concentration of [HA] is approximately 127.36.
To calculate the percentage, we need to divide the concentration of [HA] by the total concentration of ethylenediamine:
Percentage = ([HA] / Total concentration) * 100
Assuming the total concentration of ethylenediamine is 1 M,
Percentage = (127.36 / 1) * 100 = 127.36%
Therefore, at pH 6.184, the percentage of ethylenediamine in the predominant form (H+3NCH2CH2NH+3) is approximately 127.36%.
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Difference between sublimate and distillate
Answers
Answer:
distillate is the liquid that has been condensed from vapour during distillation; normally a purified form or a fraction of an original liquid while sublimate is (chemistry) a product obtained by sublimation
What is the solubility of Mg(OH)₂ at a pH of 12.80? (Ksp Mg(OH)₂ is 1.6 × 10⁻¹³)
Answers
The calculations show that Mg(OH)₂ has a solubility of 3.5 × 10⁻⁵ M at a pH of 12.80.
The term pH, which stands for "potential of hydrogen ions," can be interpreted as a measurement of the molar concentration of hydrogen ions in a particular solution. Hence, the acidity, neutrality, or basicity of any chemical solution is often determined or specified using the power of hydrogen ions (pH).
Mg(OH)₂⇔Mg²⁺(aq)+2OH⁻(aq)
First of all, we would write the chemical equation for this chemical reaction that is appropriately balanced
The Ksp for the aforementioned chemical reaction is determined mathematically by:
Ksp = [Mg²⁺][OH⁻]²
Ksp = [x][2x]²
1.6 × 10⁻¹³ = 4x³
x = ∛4 × 10⁻¹⁴
x = 3.5 × 10⁻⁵ M.
The maximum amount of a chemical that will dissolve in a particular amount of solvent at a particular temperature is known as its solubility. Different compounds have very varying solubilities, which is a characteristic of a particular solute-solvent pair.
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four difference between electrolytic cell and electrochemical cell
Answers
Answer:
Electrochemical cells convert chemical energy into electrical energy or vice versa. Electrolytic cell is a type of electrochemical cell in which electrical energy is converted into chemical energy. ... Electrolytic cells consist of positively charged anode and a negatively charged cathode.
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The compound butanol has the following structural formula.
A string of 4 C atoms are bonded above, left, and below to H. The right-hand end is bonded to O, which in turn is bonded to H.
Which of these is a structural isomer of butanol?
A string of 4 C atoms are bonded above, below, left and right to H.
A string of 4 C atoms is bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H.
A string of 4 C atoms is bonded above, below, left, and right to H, but the chain is interrupted between the first and second C, which are bonded to an O between them.
A string of 4 C atoms is bonded above, below, and left to H, except the last C has no H below and is double-bonded to an O to the right.
Answers
The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.
A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.
This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.
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2) The lowest atmospheric pressure at sea level in the Western Hemisphere was recorded in 2015 during
hurricane Patricia: a pressure of 656 torr. Show unit cancelation in work.
a) What is this pressure in kilopascals?
Answers
To convert torr to kilopascals, we can use the following conversion factors:
1 torr = 1/760 atm
1 atm = 101.325 kPa
So, we can write: 656 torr × (1/760 atm) × (101.325 kPa/atm) = 87.0 kPa
Therefore, the atmospheric pressure during hurricane Patricia was 87.0 kPa.
Certainly!
In this exercise, converting a pressure value from torr to kilopascals (kPa) is required. Torr is a common unit of pressure used in physics and chemistry, while kPa is a common unit of pressure used in engineering and other disciplines.
We may utilise a conversion factor that connects torr to kPa to carry out the conversion. We must employ the following conversion factor:
0.133322 kPa per torr
As a result, 0.133322 kPa is equal to 1 torr. A pressure value in torr may be converted to a pressure value in kPa by multiplying the torr value by the conversion factor. This enables us to eliminate the torr units and obtain a value in kPa.
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