Why the density of a gold coin and a gold statue are same, even though the gold statue consists of the greater quantity of gold

48 gm is the minimum amount of ammonium carbonate that reacts to produce 1.0 mole of ammonia.

The chemical formula for ammonium carbonate is (NH₄)[tex]_2[/tex]CO₃. It is employed as a souring agent as well as smelling salt because it easily degrades to gaseous carbon dioxide and ammonia when heated.

It is also called as cook's ammonia and was the forerunner of the contemporary leavening ingredients baking soda as well as baking powder. It is a constituent of what was previously known called sal volatile as well as salt of hartshorn, and when cooked, it has a strong odor.

(NH₄)[tex]_2[/tex]CO₃ → 2 NH₃ + CO₂ + H₂0

2 moles of ammonia are produced from 1 mole of ammonium carbonate. 0.5 moles of ammonium carbonate will be needed to produce 1 mole of ammonia.

Mass = moles × molar mass

       = 0.1 mol × 96.09 g/mol

       = 48 gm

Therefore, 48 gm is the minimum amount of ammonium carbonate that reacts to produce 1.0 mole of ammonia.

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For a given mass of gas at a constant temperature, when volume decreases pressure increases.

For at a constant temperature, when mass decreases pressure increases.

According to Boyle's Law, at a constant temperature, the pressure of a gas is inversely proportional to its volume.

Thus, a decrease in the volume of a gas will result in an increase in pressure, assuming that the temperature and amount of gas remain constant.

Assuming that the temperature and volume remain constant, an increase in the mass of a gas will result in an increase in its pressure. This is because as the mass of the gas increases, the number of gas particles also increases, which leads to an increase in the frequency and force of their collisions with the container walls. These increased collisions result in an increase in the pressure of the gas.

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We're given:

First, let's calculate the theoretical yield of NO2.

⇒ [tex]\%\hspace{4}yield=\dfrac{actual\hspace{4}yield}{theoretical\hspace{4}yield}[/tex]

The yield of NO2 we must produce is 13.0 mol.

⇒ [tex]\%\hspace{4}yield=\dfrac{13.0}{theoretical\hspace{4}yield}[/tex]

We're also given that the percentage yield of this reaction is 67.1%.

⇒ [tex]0.671=\dfrac{13.0}{theoretical\hspace{4}yield}[/tex]

⇒ [tex]theoretical\hspace{4}yield=\dfrac{13.0}{0.671}\\\\theoretical\hspace{4}yield=19.3740685544\hspace{4}mol[/tex]

First, construct a mole ratio between O2 and NO2.

From the balanced chemical equation, we know that 1 mol of O2 can produce 2 mol of NO2:

⇒ [tex]\dfrac{n_{O_2}}{1}=\dfrac{n_{NO_2}}{2}[/tex]

We're given that we must theoretically produce 19.3740685544 mol of NO2:

⇒ [tex]\dfrac{n_{O_2}}{1}=\dfrac{19.3740685544}{2}[/tex]

⇒ [tex]n_{O_2}=9.6870342772\hspace{4}mol[/tex]

Round to significant figures (3):

⇒ [tex]n_{O_2}=9.69\hspace{4}mol[/tex]

[tex]n_{O_2}=9.69\hspace{4}mol[/tex]

According to the stoichiometry of the given chemical equation, 0.2 moles of potassium oxide would be produced assuming you had unlimited oxygen.

Stoichiometry is defined as   the determination of proportions of elements or compounds in a chemical reaction. The  relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

In the given equation,156 g potassium gives 188.4 g potassium oxide, thus, 15.6 g will give 15.6×188.4/156=18.84 g potassium oxide which is 18.84/94.2= 0.2 moles.

Thus, 0.2 moles of potassium oxide would be produced assuming you had unlimited oxygen.

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The rate constant for this first‑order reaction is 0.0990 s−1 at 400 ∘C. A⟶products, After 14.90 seconds will 19.4% of the reactant remain.

The term first-order reaction is defined as a reaction that proceeds at a rate that depends linearly on only one reactant concentration.

We can use the formula;

0.693/t1/2 = 2.303/tlog (No/N)

Given that t1/2 = 0.693/k

= 0.693/0.0990 s − 1

= 6 seconds

Therefore,

0.693 / 6 = 2.303/t log 1/0.194

0.693/6 = 1.64/t

t = 1.64/0.11

t = 14.90 seconds

Thus, After 14.90 seconds will 19.4% of the reactant remain.

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The stoichiometry can be used to obtain the parameters about a reaction.

The question is incomplete but I will show you how to use stoichiometry to obtain the parameters that concern a reaction.

Here are the steps to use stoichiometry in a chemical reaction:

Write a balanced chemical equation: The first step is to write a balanced equation for the chemical reaction, which shows the correct number of atoms of each element involved in the reaction.

Determine the molar ratio: From the balanced equation, determine the molar ratio of the reactants and products by counting the number of moles of each species. This will give you the conversion factor between the reactants and products.

Choose a reactant or product to work with: Choose the reactant or product that you have information about, either the amount or the concentration.

Calculate the number of moles: Using the amount or concentration of the reactant or product, calculate the number of moles of that species.

Use the molar ratio to calculate the other species: Using the molar ratio determined in step 2, calculate the number of moles of the other reactants or products.

Convert moles to the desired units: Finally, convert the number of moles to the desired units, such as mass, volume, or number of particles.

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Answer:

[tex]\huge\boxed{\sf n = 1.5\ mol}[/tex]

Explanation:

Mass = m = 39 g

Molar mass = M = 7 + 19 = 26 g/mol

No. of moles = n = ?

[tex]\displaystyle n = \frac{m}{M}[/tex]

Put the given data in the above formula.

n = 39/26

[tex]\rule[225]{225}{2}[/tex]

Answer:

Single replacement

Explanation:

Answer:

single replacement reaction

Explanation:

This type of reaction, one element is swapped with another element in a compound, leading to the formation of two new compounds. The element A replaces one of the elements in compound B to form element C and compound D.

In a single replacement reaction, the reactants are typically elements in their elemental form and a compound. The element that is replaced is typically one that is more reactive, meaning it has a greater tendency to react and form a new compound. The new compound that is formed is typically more stable, meaning it has a lower tendency to react and form another new compound.


ALLEN

Since the configuration is such that we call it sinister (left). That inspired the name.

The stereochemistry has to do with the study of the arrangement of the atoms and the groups that are in a compound. In this case, we can see that the compound that we have in the question has an (S) configuration and the meaning of this is that we can be able to arrange the priority groups from the left hand side as shown.

This can now explain to us that since the configuration is sinister then the name of the compound that is under study here can now be called Levetiracetam.

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That's a good summary of how to represent amino acids in Fischer projections and determine their D/L configuration.

Just to clarify, the orientation of the amino group is actually determined by looking at the lowest chiral center of the molecule, which is usually the alpha carbon (the carbon next to the carboxyl group). If the amino group is on the right side of this carbon in the Fischer projection, it is an L-amino acid; if it's on the left side, it's a D-amino acid. This may seem counterintuitive, but it's because the Fischer projection is actually a 2D representation of a 3D molecule, and the labels "D" and "L" were historically assigned based on the orientation of the molecule in space rather than the orientation on paper.

Additionally, the R/S system is a different method of assigning absolute configuration (not D/L) to chiral centers in molecules, including amino acids. In this system, the orientation of the groups around the chiral center are ranked by priority (based on atomic number), and the molecule is oriented so that the lowest priority group is pointing away from the viewer. The remaining three groups are then prioritized in a clockwise or counterclockwise direction, and the molecule is assigned an R or S configuration based on the direction of the priority sequence.

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17g is the mass of of silver nitrate will react with 5.85 g of sodium chloride to produce 14.35 g of silver chloride and 8.5 g of sodium nitrate.

Silver nitrate is indeed a chemical compound having the formula AgNO[tex]_3[/tex]. It serves as a flexible precursor to a wide range of other silver compounds, including those employed in photography.

It is significantly less light sensitive than halides. It was originally known as lunar caustic because ancient alchemists connected silver with both the moon and termed it luna.

According to law of conservation of mass

Total mass of reactants = Total mass of products

Mass of Silver nitrate + 5.85g= 14.35g+ 8.5g

Mass of silver nitrate = 22.85-5.85= 17g

Therefore,  17g is the mass of silver nitrate.

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Answer:

Creep feeding can help them make the transition without such a setback, and it can also help them begin to produce the enzymes needed to digest nonmilk proteins.

Explanation:

A.By using the rate law it was discovered that doubling the concentration of Fe(III) doubled the reaction rate, and doubling the concentration of iodide quadrupled the reaction rate.

A chemical reaction's rate law is the mathematical relationship between the rate of the reaction and the concentrations of the reactants. The rate law of a chemical reaction is determined by measuring the initial rate of the reaction at various reactant concentrations.

B.Simply changing the concentration of thiosulfate in solution allows us to see how the rate of reaction changes, If the thiosulfate ion concentration is doubled while the rate of reaction remains constant, the reaction is zeroth order in thiosulfate ion concentration.

C. Nothing happen to the rate of the reaction if the per sulfate concentration was halved.

D.The concentrations of all reactants are held constant. The total volume of the solution has no effect on the rate of the iodine clock reaction.

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If 12.0 grams of potassium chlorate decompose, 7.29 grams of potassium chloride will be produced.

The term molar mass of a substance is defined as the mass in grams of one mole of the compound. In a substance, the amount of entities present e.g., atoms, molecules, ions, is defined as a mole. A mole of any substance is 6.022×10²³ molecules.

First change 12.0 grams of potassium chlorate to moles.

calculate the gram molecular mass of potassium chlorate.

Chlorine has seven valance electrons when it is saturated six of these electrons are used by oxygen ( 2 electrons per oxygen) leaving only 1 electron.

1 K x 39 grams/mole

+1 Cl x 35.4 grams/ mole

+3 O x 16 grams/ mole

= 122.4 grams / mole Potassium Chlorate

= 12/122.4

=  0.09 moles.

0.09moles of Potassium Chlorate.

There is a 1:1 mole ratio. 1 mole of Potassium Chlorate will produce 1 mole of Potassium Chloride.

0.09 moles of Potassium Chlorate will produce 0.09moles of Potassium Chloride.

Find the gram molecular mass of Potassium Chloride.

1 K x 39 = 39

+1 Cl x 35.4 = 35.4

= 74.4 grams / mole.

0.09 moles x 74.4 grams/ mole

= 7.29 grams

Thus, if 12.0 grams of potassium chlorate decompose, 7.29 grams of potassium chloride will be produced.

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Answer:

Polonium is a highly radioactive substance, meaning it emits ionizing radiation, which can cause harm to living organisms. When ingested or inhaled, polonium can damage internal organs, including the kidneys, liver, and bone marrow, and cause radiation sickness. This makes it a potent poison and an easy means to kill someone. Because of its toxic nature and the fact that it is not easily detectable, polonium has been used in assassination attempts, making it a dangerous substance to handle or be around.

Explanation:

Answer:

polonium is a highly radioactive and toxic element that can cause severs health problem if ingested or inhaled

Explanation:

If a reaction vessel is charged with 0.50 atm of A and 0.130 atm of B. Once the reaction reaches equilibrium,  the equilibrium partial pressure of B is:  5.79 atm.

To calculate the equilibrium partial pressure of B, we need to use the expression for an equilibrium constant (Kp). The equation for Kp for a reaction of the form A (g) ⇌ 2 B (g) is given by:

Kp = (P_B^2) / (P_A)

Where:

P_A and P_B are the equilibrium partial pressures of A and B, respectively.

Given that the initial pressures of A and B are 0.50 atm and 0.130 atm, respectively, and the value of Kp is 67.2, we can use the above equation to calculate the equilibrium partial pressure of B:

Kp = (P_B^2) / (P_A) = 67.2

P_A = 0.50 atm

Therefore,

(P_B^2) / (0.50 atm) = 67.2

P_B^2 = 67.2 * 0.50 atm = 33.6 atm

P_B = √(33.6 atm) = 5.79 atm

So, the equilibrium partial pressure of B is approximately 5.79 atm.

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The heat of fusion for water is 6.01 kJ/mole and the heat of vaporization for water is 40.7 kJ/ mol,7.5125 KJ energy is needed to melt 22.5 grams of ice.

The enthalpy of fusion is also known as heat of fusion, is the change in its enthalpy resulting from supplying energy, typically heat, to a specific quantity of the substance to alter its state from a solid to a liquid, at constant pressure.

Given:

The heat of fusion for water = 6.01 kJ/mole

The heat of vaporization for water = 40.7 kJ/ mol

Energy = ?

Number of moles of ice = mass / molar mass

Number of moles of ice = 22.5 / 18

= 1.25 moles

Q = number of moles × Hf

= 1.25 × 6.01

= 7.5125 KJ

Thus, 7.5125 KJ energy is needed to melt 22.5 grams of ice.

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The molar mass is 370 g/mol.

The freezing point is the temperature at which a substance changes from a liquid to a solid state. This change of state occurs when the thermal energy of the substance decreases to the point where the molecules can no longer move freely and instead become organized in a fixed, solid structure.

We know that;

ΔT = K m i

ΔT = Freezing point depression

K = freezing constant

m = molality

i  = Van't Hoff factor

Thus;

Molality = 35.3/M/148.5 * 10^-3

Where M is the molar mass

Then;

ΔT = Freezing point of pure solvent - Solution

= 0 - (-1.2°C) = 1.2°C

Thus;

1.2 = 1.86 * 35.3/0.148 M * 1

1.2 * 0.148 M = 1.86 * 35.3

M = 1.86 * 35.3/1.2 * 0.148

M = 65.658/0.1776

M = 370 g/mol

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Answer:

The molarity of a solution can be calculated by dividing the number of moles of solute by the volume of the solution in liters. To calculate the number of moles of solute in a solution, we first need to find the mass of the solute.

Since the concentration of the phosphate sample is given in mg/L (ppm), we can convert this to grams by multiplying by 0.001:

93.1 mg/L x 0.001 g/mg = 0.0931 g/L

Next, we can find the number of moles of solute by dividing the mass of solute by its molar mass:

0.0931 g ÷ (1 mol/94 g) = 0.000989 mol/L

Finally, we can find the molarity of the solution by dividing the number of moles of solute by the volume of the solution:

0.000989 mol ÷ (1 L) = 0.000989 M

An adaptation that is useful for living in one type of environment may be useless in a different environment. Organisms must live in a place that has the conditions they need to survive. Organisms generally have adaptations that allow them to survive in one particular enviroment.

The expression adaptations in a particular enviroment mean that these traits are only advantageous regarding the enviroment.

Therefore, with this data, we can see that the adaptations in a particular enviroment can be detrimental or beneficial depending on the enviroment.

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Answer:

chemical reaction

Explanation:

Answer:

Making soap can be considered a chemical reaction.

Explanation:

In the process of making soap, a reaction takes place between a fat or oil and an alkali, such as lye (sodium hydroxide), which results in the formation of soap molecules and glycerol. This reaction is known as saponification. The change in the composition of the reactants to form a new substance is a chemical change, not a physical change or a phase change.

Theoretically, carbon dioxide can be produced by multiplying 0.139 moles of glucose by 6 moles of carbon dioxide per mole of glucose, which results in 0.834 moles of carbon dioxide.

The theoretical yield of a chemical reaction is the volume of a product that is produced when a limiting reactant is completely converted. Because it indicates the product amount that would result from a perfect (theoretical) chemical reaction, it is not the same as that of the quantity that would actually acquire from a reaction in the lab.

Calculate its molar mass of a element by the weight of the compound, then multiply the result by 100 to determine the theoretical proportion of the element in the compound. The actual yield of a product in a chemical reaction is calculated by dividing it by the theoretical yield and multiplying the result by 100.

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Yes, Jose reached his goal.

In chemistry, the mole is a unit used to measure the amount of a substance. It is defined as the amount of a substance that contains the same number of entities (such as atoms, molecules, or ions) as there are atoms in 12 grams of pure carbon-12. This number is known as Avogadro's number and is approximately equal to 6.022 × 10^23.

The concept of the mole is fundamental to many areas of chemistry, including stoichiometry, the study of chemical reactions and their quantitative relationships. It allows chemists to make precise measurements and calculations, and to compare and relate the properties of different substances.

Number of moles in 40 g of iron = 40g/56 g/mol

= 0.7 moles

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The energy traveled from you to your friend through the medium of the air. When you moved your arm, the energy created a vibration in the air which then propagated in all directions. As the wave traveled, it passed through the air and eventually reached your friend, carrying energy with it.

Energy is the ability to do work or cause change. It is the capacity to cause motion, to create heat, to transform matter, or to generate electricity. It can come from a variety of sources, such as the sun, wind, water, fossil fuels, nuclear energy, and other renewable sources. Energy can also be stored in batteries or fuel cells. It is a fundamental component of the universe and is essential for life. All life forms require energy to survive and grow, and energy is also necessary for the development of technology. Without energy, the world would not function as it does today.

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Answer:

The main function of chloroplast in a plant is to prepare food for the plant, by the process of photosynthetic in the plant cell

Chloroplast contains a green pigment

Explanation:

Answer:

The main function of chloroplasts in a plant cell is to perform photosynthesis. Chloroplasts contain chlorophyll, which absorbs light energy and converts it into chemical energy through a process called the light-dependent reactions. The chemical energy is then used to produce glucose and other sugars from carbon dioxide and water in a process called the light-independent reactions or the Calvin cycle. This process provides the plant with its energy source, as well as produces oxygen as a by-product.

Explanation:

The osmotic pressure of a solution made by absorbing 0.822 g of it within 300 cm 3 of water is 149 mm Hg at 298 K. The solute has a molar mass of 342 g mol 1.

Calculate the molar mass of the solution using the depression at the freeing point (T f). Next, determine the moles of solute using the molality equation. To get the molar mass, divide the solute's mass in grams by the number of moles.

The percentage of a solute in the solvent is one way to express a concentration of a solution. The percentage can be determined further in one of two ways the quantity determined by dividing the amount of the solute by the concentration of the sample.

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The density is described below, the relationship of density and temperature.

What is density ?

How compact or concentrated anything is is determined by its density. Take two boxes as an illustration, one huge and one little. They both weigh the same, though. This indicates that the small box is more dense than the huge box. Additionally, density conveys how crowded or dense something is.

What is temperature?

In the International System of Units (SI), the kelvin serves as the fundamental measure of temperature. K serves as its symbol. For practical purposes, it is frequently convenient to use the Celsius scale, where 0 °C nearly resembles the freezing point of water and 100 °C signifies the boiling point of water at sea level.

Density = mass / volume

There is no change in mass with temperature.

Volume increases with increases in temperature because kinetic energy of molecules increases with temperature. so the molecules are move away from each other.

So, since density is inversely proportional to volume.

As temperature increases, volume increases thus density increases.

Therefore, The density is described above, the relationship of density and temperature.

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The best response to the customer's question, "How do I figure out the file extension?" is:

"Look at the letters that follow the dot after the file name."

What is Customer?

A customer is a person or organization that buys or uses goods or services produced by another person or organization. Customers are an essential part of any business or economy, as they create demand for products and services, which in turn drives economic activity.

Customers may be individuals, such as consumers who buy products for personal use, or businesses, which buy products for use in their operations or to sell to their own customers. Customers may also be government agencies, non-profit organizations, or other institutions.

The file extension is typically the letters that follow the last dot in the file name. For example, if the file name is "document.pdf", the file extension is ".pdf". The file extension is used to indicate the type of file and the software that should be used to open it. Knowing the file extension is important because it helps in troubleshooting issues with opening files, as different file types may require different software to open them.

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Answer:

Explanation:

D