To determine if the sodium hydroxide solution has a suitable concentration for commercial potato peeling, we can use the formula:
M1V1 = M2V2
Where M1 is the molarity of the sodium hydroxide solution, V1 is the volume of the sodium hydroxide solution used in the titration, M2 is the molarity of the hydrochloric acid used in the titration, and V2 is the volume of hydrochloric acid used in the titration.
First, we need to convert the volume of hydrochloric acid used to liters:
30.6 ml = 0.0306 L
Next, we can substitute the given values into the formula and solve for M1:
M1(0.01200 L) = (1.65 M)(0.0306 L)
M1 = (1.65 M)(0.0306 L) / 0.01200 L
M1 = 4.224 M
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Imagine it is possible to build a very tall
tower on Earth's equator. The tower is
6 miles high. It is higher than the tall-
est mountain, higher than planes fly.
Now imagine it is possible for a person
to stand at the top of this tower and
drop a ball.
Where do you think the ball will go when it is dropped? A) The ball in the fall to the earth along side the tower b) The bowl far apart into space away from earth C) The Ballfall downward into space away from earth D) The ball will circle around the earth
When the ball is dropped from the top of the very tall tower on Earth's equator, it will fall downward along the side of the tower. The correct answer is A) The ball will fall to the Earth along the side of the tower.
This is because when an object is dropped on Earth, it is subject to the force of gravity, which pulls it towards the center of the Earth. The ball will experience an acceleration due to gravity, causing it to fall vertically downward.
Although the tower is exceptionally tall, it is still located on Earth's surface and within Earth's gravitational field. The ball does not possess enough initial velocity or energy to escape Earth's gravitational pull and be launched into space. Therefore, options B) and C) can be ruled out.
Similarly, the ball will not circle around the Earth (option D) because it lacks the required velocity and trajectory to achieve a stable orbit. It will simply fall in a straight line, following a vertical path downward towards the Earth's surface.
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how many moles of Mg is 3.5 x 10^27 atoms of Mg
mmg mmñm
Explanation:
no lo seeee123456789
what happens when a gas obtained by heating Ammonium Chloride and slaked lime are passed through copper sulphate ?
Answer:
Consequently, what happens when gas obtained by heating slaked lime and ammonium chloride is passed through copper sulphate solution? The HCl in the gas mixture will form hydrochloric and the H+ will react with some of the NH3(aq), forming NH4^+, and with some of the SO4^2-, forming HSO4^-.
The gas obtained by heating Ammonium Chloride and slaked lime is passed through copper sulphate, deep blue solution will be formed.
Gas obtained from heating Ammonium ChlorideThe gas obtained by heating Ammonium Chloride and slaked lime is ammonia gas.
2NH₄Cl + Ca(OH)₂ ---> CaCl₂ + 2NH₃ + 2H₂O
Reaction of ammonia gas with copper sulphateAmmonia reacts with copper (II) ions to precipitate light blue copper hydroxide.
Ammonia causes the copper ion to go back into the solution as a deep blue ammonia complex.
However, in excess ammonia, the precipitate dissolves.
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what information is needed to balance a chemical formula equation example periodic table or list of chemicals
To balance a chemical formula equation, you need to know the elements and their respective atomic mass. You can find this information on the periodic table.
To balance a chemical formula equation, you need the following information: periodic table or list of chemicals. A chemical formula is a symbolic representation of the elements present in a compound, as well as the proportion in which they are present. The subscripts indicate the relative number of atoms of each element in the compound's formula. The Periodic Table can also be useful in determining the atomic masses of the elements involved in the reaction. A balanced chemical equation is an essential tool for predicting the outcome of chemical reactions, calculating reaction stoichiometry, and calculating the amount of reactants needed to produce a given amount of product.
Therefore, you need to have a list of chemicals, formulas, and the number of atoms for each element in each reactant and product in order to balance a chemical equation.
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When the kinetic energy of an object changes, there must be some other change in energy at the same time?
When the kinetic energy of an object changes, the motion of that object also changes at the same time.
The amount of energy that a body posses by virtue of its motion is known as Kinetic energy. Therefore, kinetic energy can only be found in objects which are in motion. The amount of Kinetic energy is calculated as follows:
K = 1 /2 mv²
Where, K represents the kinetic energy, m is the mass of the moving object, and v is the velocity or the speed of the object at which it is moving.
If the kinetic energy of the body increases then the motion of the body also increases and if the kinetic energy decreases then the velocity also decreases.
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what happens to the gaseous phase of water when it reaches a metal lid
Answer:
When the gaseous phase of water reaches a metal lid it condenses to form water.
Explanation:
The gaseous phase of water is at a higher temperature than the temperature of a metal lid. Thus when it comes in contact with the cold lid it loses heat and gets converted to the liquid phase.
When water vapor loses temperature, it undergoes a process called condensation, which results in its conversion to a liquid state. This process is essentially the opposite of vaporization. Typically, condensation occurs when a vapor is compressed or cooled to its saturation limit, causing the molecular density within the gas phase to reach its maximum threshold.
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đun 8,8 g một este có công thức phân tử c 4 h 8 O2 trong dung dịch NaOH vừa đủ đến khi phản ứng hoàn toàn thu được 3,2 g ancol X và một lượng muối y công thức cấu tạo của este đó là
Answer:
english please I don't understand
11. How is the atomic emission spectrum of an element produced?
Answer:
Atomic emission spectra are produced when excited electrons return to the ground state. When electrons return to a lower energy level, they emit energy in the form of light.
Explanation:
PLS HELP!!Which is a future NASA research project? A. using a probe to collect data B. conducting research from a space station C. collecting samples on an asteroid D. conducting a space mission with no people
Answer:
Answer:
A. Using a probe to collect data
Explanation:
I think Hope it helps
Explanation:
Answer: C
Explanation: got it right on edge
What is the term for propane and butane fases that can be liquified?
The term for the propane and butane phases that can be liquefied is "liquefied petroleum gas" or LPG. LPG is a mixture of propane and butane gases that are compressed and cooled to a point where they transition from their gaseous state to a liquid state.
This process of converting the gases into a liquid form allows for easier storage, transportation, and handling. LPG is commonly used as a fuel for heating, cooking, and powering various appliances. It is widely available in portable cylinders and larger storage tanks. LPG has a higher energy content compared to its gaseous form, making it a convenient and efficient fuel source. The ability of propane and butane to be liquefied and stored as LPG is due to their relatively low boiling points and the pressure at which they are compressed. By controlling the temperature and pressure, the gases can be condensed into a liquid state, allowing for greater convenience and versatility in their use.
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experiments also show that any aqueous solution at 25 degree celsius, the ionic-product of water Kw is equal to a constant value:
In any aqueous solution at 25°C, the ionic-product of water (Kw) is a constant value equal to 1.0 x 10⁻¹⁴ mol²/L².
Due to the auto-ionization or self-ionization of water, water molecules dissociate into hydronium ions (H₃O⁺) and hydroxide ions (OH⁻). At 25°C, the Kw is equal to 1.0 x 10⁻¹⁴ mol²/L².
This constant value of Kw plays a crucial role in understanding the acidity and basicity of aqueous solutions. It helps to establish the relationship between the concentrations of hydronium and hydroxide ions, as their product remains constant at a given temperature. The pH and pOH scales are derived from this relationship, providing a convenient method for measuring the acidity or basicity of a solution.
In summary, the ionic-product of water, Kw, remains constant at 1.0 x 10⁻¹⁴ mol²/L² for any aqueous solution at 25°C. This constant is a result of the auto-ionization of water and helps to understand the relationship between hydronium and hydroxide ions in the context of acidity and basicity.
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Use these two constants for the question that follows:
• e = 1.6 × 10^-19 C
• k = 8.99 × 10^9 N m^2/C^2
Two negative charges are 10^-14 m away from each other. Using Coulomb's law, which of the following is the electrical force between these two particles?
A) 2.3 N
B) -2.3 N
C) 1.4 N
D) -1.4 N
The electrical force between these two particles is approximately -2.3 N.
So,the correct answer is (B) -2.3 N
Coulomb’s law is given as:F=ke * q1 * q2 / d^2
Where,F = Force in Newton (N)q1 = Charge on particle 1 in Coulombs (C)q2 = Charge on particle 2 in Coulombs (C)k = Coulomb’s constant = 8.99 × 10^9 N m^2/C^2d = Distance between two particles in meters (m).
Given:e = 1.6 × 10^-19 Ck = 8.99 × 10^9 N m^2/C^2Distance between two particles, d = 10^-14 mAs given, both particles are negative charges; hence, the force between the two particles will be repulsive.
The formula to find the electric force between two negative charges is:F = -ke * q1 * q2 / d^2F = - (8.99 × 10^9 N m^2/C^2) * (1.6 × 10^-19 C) * (1.6 × 10^-19 C) / (10^-14 m)^2= - 2.304 × 10^-9 N= - 2.3 N (approximately).
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Chlorine displaces iodine from a solution of sodium iodide in a redox reaction.
The equation for this reaction is shown.
Cl₂ + 2NaI—>2NaCl + I₂
Which statement about this reaction is correct?
A Chlorine is the oxidising agent and it oxidises iodide ions.
B Chlorine is the oxidising agent and it reduces iodide ions.
C Chlorine is the reducing agent and it oxidises iodide ions.
D Chlorine is the reducing agent and it reduces iodide ions.
Answer:
(A) chlorine is an oxidizing agent in this reaction so it oxidize iodine and it itself is reduced
Explanation:
Cl2 oxi no. = 0 became Cl- oxi no. = -1
so it is reduced
I- oxi no. = -1 became I2 oxi no. = 0
so it oxidized
How was Bohr’s atomic model different from Rutherford’s atomic model?
Answer:
Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. ... He believed that electrons moved around the nucleus in circular orbits with quantised potential and kinetic energies.
Answer:
The answer is A electrons exist in specified energy levels surrounding the nucleus. for people in edguinity
Explanation:
What is the name of the formula NI3 PO4?
Nickel (I) phosphate
Nickel (III) Phosphate
Answer:
Nickel (I) Phosphate
Explanation:
PO4 is a -3 ion it will need 3 Ni(I) ion, which is -1 ion. Therefore it is Ni3PO4.
summarize the first step in drawing lewis dot structures, including deciding which atom will be in the central position,
Most electronegative atom will always lie in the central position.
What are the steps in drawing Lewis dot structures:Step 1. Determine the total number of valence electrons to be depicted in the Lewis diagram.Step 2. Place least electronegative element in given compound, in center and draw single bonds from the central atom to other atoms.Step 3. Determine how many electrons must be added to central element.Step 4. Add double or triple bonds to central atom until it has a full octetStep 5. Add electrons to outer elements until they have full octets.
For example: Ammonia (NH3)
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PLEASE HELP!! A model of an atom is shown below. Which element is represented by this
model?
Answer:
Carbon
Explanation:
Identify one air pollutant released from the combustion of coal.
-carbon dioxide
-sulfur dioxide
-toxic metals (such as mercury)
-particulates
Sulfur dioxide is one air pollutant released from the combustion of coal.
When coal is burned for energy production, it releases various pollutants into the atmosphere, and one of the primary pollutants is sulfur dioxide (SO2). Coal often contains sulfur compounds, and during combustion, these compounds are oxidized, producing SO2. This pollutant is a significant contributor to air pollution and has detrimental effects on both human health and the environment.
Sulfur dioxide emissions from coal combustion contribute to the formation of acid rain, which damages ecosystems and harms aquatic life. Moreover, SO2 is a respiratory irritant and can cause or worsen respiratory diseases, such as asthma and bronchitis, in humans. The release of sulfur dioxide can also lead to the formation of fine particulate matter (PM2.5) and contribute to the overall air quality degradation. To mitigate the harmful effects of coal combustion, it is essential to employ pollution control technologies, such as flue gas desulfurization systems, to reduce sulfur dioxide emissions and promote cleaner and more sustainable energy sources.
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write the example of solid liquid and gas separately
Answer:
Solid = rocks or other hard stuff
Liquid = water or mild or other stuff likt that
Answer:Ice is an example of a solid. A liquid has a defined volume, but can change its shape. Water is an example of a liquid. A gas lacks either a defined shape or volume.
...
Examples of gases include:
Air.
Natural gas.
Hydrogen.
Carbon dioxide.
Water vapor.
Freon.
Ozone.
Nitrogen.
Explanation:
Carbon cycle – What are the main reservoirs
of the carbon cycle? Where do the inorganic and organic carbon
cycles interact? What are the major differences and similarities
between the inorganic and organic carbon?
The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.
The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.
Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.
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True or false? Acid strength and acid concentration both mean the same thing.
Answer:False
False
Explanation:acid concentration and acid strength are two completely different
it is false..hope it helps you
17. For each of the following state whether it refers to the term acidic, basic, or neutral.
b. [H] = 1 x 107
d. tomato juice
a. feels slippery
c. [H] <[OH]
e. [OH]=4x 10
8. [H] = [OH]
i. [OH]> 1 x 107
k[H]-2.96 x 10-¹²
m. Windex
_o. HCI, HNO3, H₂SO₂
_q. *turns red litmus paper blue
f. NaOH, KOH, NH,
h. tart, sour taste
j. pure water
1. [H]> 1 x 107
_n. [H*]> [OH]
P. [OH] = 1 x 107
r. *turns blue litmus paper red
For the following solutions:
b. basicd. acidica. basicc. basice. basicg. basici. neutralk. acidicm. basico. acidicq. acidicf. basich. acidicj. acidicl. neutraln. acidicp. basicr. acidicWhat is acidic, basic, or neutral state?Acidic, basic, and neutral are terms used to describe the pH (power of hydrogen) of a solution.
pH is a measure of the concentration of hydrogen ions (H+) in a solution, with lower pH values indicating higher concentrations of H+ (acidic), higher pH values indicating lower concentrations of H+ (basic), and pH 7 indicating equal concentrations of H+ and hydroxide ions (OH-) (neutral).
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fuerza que ejerce el planeta tierra sobre los cuerpos que en ella se encuentran. Fuerza de distancia Fuerza de Contacto
Answer:
Ver explicacion
Explanation:
La gravedad es una fuerza que actúa a distancia. La fuerza que actúa entre la tierra y los cuerpos en ella es la fuerza gravitacional.
Es un ejemplo típico de una fuerza de acción a distancia.
Por lo tanto, la fuerza tat que existe entre la tierra y los cuerpos que se encuentran en ella es una fuerza de distancia.
To calculate the work that an object does when it moves covering a distance of 3000 meters when it is propelled by a force of 65 Newton, one of the principles of mechanics must be considered.
Physical principle of mechanicsA force does work when there is a displacement of the center of mass of the body on which the force is applied, in the direction of said force.
The work of the force on that body will be equivalent to the energy necessary to displace it, so that:
W = F.d
Force CalculationSubstituting the corresponding values in said formula:
F = 65N
d = 3000m
W = 65 N. 3000 m
W = 195000 W
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CALCULATE THE RMM OF , CA(OH)2, AL2SO4.
Answer:
The RMM of Ca (OH)2 is
40+ (16+1)2
40+(17)2
40+34
74
The RMM of Al2SO4 is
(27×2)+32+(16×4)
54+32+64
=150
Explanation:
Note that the RAM of:
Ca=40
O=16
H=1
Al=27
S=32
a guitar string vibrates at a frequency of 5 Hz and has a wavelength of 3 m. what is the wave speed?
l = 5 m, w = 1 m, h = 3 m
15 m3
5 m2
30 m2
9 m3
7.5 m3
Volume of Cuboid :
l × w × h 5 × 1 × 3 15 m³calculate the ph of a 0.40 m solution of aniline(c6h5nh2, kb = 3.8 x 10-10.)
An aniline (C6H5NH2) solution at 0.40 M has a pH of 8.59.
To calculate the pH of a 0.40 M solution of aniline \((C_6H_5NH_2)\), we first need to determine the concentration of hydroxide ions \((OH^-)\) produced by the reaction of aniline with water, as aniline is a weak base. We will use the Kb value provided (3.8 x 10^-10) in this calculation.
1. Set up the equilibrium expression for aniline in water:
\(K_b = [C_6H_5NH_3^+][OH^-]\) / \([C_6H_5NH_2]\)
2. Assume a small amount of aniline, x, reacts to form \(C_6H_5NH_3^+\) and \(OH^-\)ions:
\(K_b\) = (x)(x) / (0.40 - x)
3. Since Kb is very small, we can assume x is much smaller than 0.40, so the equation can be simplified to:
\(K_b\) = x^2 / 0.40
4. Solve for x, which represents the concentration of OH- ions:
x = √(\(K_b\) × 0.40) = √(3.8 × 10^-10 × 0.40) = 3.89 × 10^-6 M
5. Calculate the pOH using the OH- concentration:
pOH = -log10(3.89 ×\(10^-6\)) = 5.41
6. Finally, find the pH using the relationship between pH and pOH:
pH = 14 - pOH = 14 - 5.41 = 8.59
Therefore, the pH of a 0.40 M solution of aniline (C6H5NH2) is 8.59.
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What is the mass of 50mL of water when you dont know the density
Answer:
13.09 g
Explanation:
To determine mass, subtract the mass of the empty cylinder from the mass of the cylinder plus liquid. The mass of the liquid is 13.09 g . In this question, volume is measured in milliliters, mL , and mass is measured in grams, g. Substitute your known values into the density equation and solve.
the decay rate for a radioactive isotope is 5.4 percent per year. find the half-life of the isotope.
The half-life of a radioactive isotope is the amount of time it takes for half of the atoms in a sample to decay.
What is radioactive isotope?A radioactive isotope is an unstable form of an element that emits radiation as it decays. It is produced when a neutron is added to the nucleus of an atom, making it unstable and prone to radioactive decay. Radioactive isotopes are used in a variety of medical, scientific and industrial applications. In medicine, they are used to diagnose and treat diseases, while in industry they are used to detect flaws in materials. In scientific research, they are used to measure age and composition of materials.
Therefore, the half-life of this isotope is 12.75 years, since it takes 5.4 percent of the atoms in a sample to decay per year. This means that if we start with a sample of 100 atoms, after 12.75 years, only 50 atoms would remain in the sample. After 25.5 years, only 25 atoms would remain, and so on. This can be calculated by taking the natural log of 2 and dividing it by the decay rate of the isotope, which in this case is 5.4%.
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does carbon dissolve in water
Answer:
yes
Explanation:
CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon