how many mols of hg3(po4)2 would be created by mixing 143.8 g of hg(OH) with excess H3PO4?

Answer:

Mechanical energy is energy that results from movement or the location of an object. Mechanical energy is the sum of kinetic energy and potential energy.

Explanation:

Nuclear energy is energy resulting from changes in the atomic nuclei or from nuclear reactions.

Example: Nuclear fission, nuclear fusion, and nuclear decay are examples of nuclear energy. An atomic detonation or power from a nuclear plant are specific examples of this type of energy.

Answer:

that is impossible. the atomic number can only go up each group

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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Given that an average person burns about 100 calories when running a mile, after eating a candy bar, you must run 2.55 miles to burn it off.

The amount of energy in an item of food or drink is measured in calories.

If a candy bar has 30 g of sugar (which has 4 calories/g) and 15 g of fat (which has 9 calories/g), then the total calories each candy bar has is:

sugar : 30g(4 calories/g) = 120 calories

fat : 15g(9 calories/g) = 135 calories

candy bar = 120 + 135 = 255 calories

If you eat a candy bar that has 255 calories, and an average person can burn 100calories/mile running, then,

x = 255 calories/(100calories/mile)

x = 2.55 miles

where x = number of miles you need to run to burn off the calories

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The calcium ion has 18 protons, 20 neutrons, and 20 electrons.
The relationship between the components a and b is Inverse proportion.


The calcium ion (Ca2+) has a 2+ charge, indicating that it has lost 2 electrons from its neutral state. To determine the number of protons, neutrons, and electrons in the calcium ion, we need to consider its atomic number and mass.

The atomic number of calcium is 20, which indicates that it has 20 protons. Since the calcium ion has a 2+ charge, it means it has lost 2 electrons. Therefore, the number of electrons in the calcium ion is 20 - 2 = 18.

The mass number of calcium is 40 amu, which represents the total number of protons and neutrons. Since the calcium ion has 20 protons, the number of neutrons can be calculated as 40 - 20 = 20.

So, the correct option is: d. 18 protons, 20 neutrons, and 20 electrons

In the expression a∼1/b, the relationship between the components a and b is an inverse proportion. This means that as the value of a increases, the value of b decreases, and vice versa. The symbol ∼ represents the proportional relationship between a and 1/b, indicating that they are inversely related. Therefore, the correct answer is: Inverse proportion

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UwU have a good day bye!

Percent yield = 78.7% , the correct answer is D) 78.7%, which represents the percent yield of NaCl in the reaction.

To calculate the percent yield of NaCl in the given chemical equation, we need to compare the actual yield of NaCl with the theoretical yield. The theoretical yield is the amount of NaCl that would be produced if the reaction went to completion based on stoichiometry.

First, we need to determine the theoretical yield of NaCl. By examining the balanced equation, we can see that the stoichiometric ratio between CuCl2 and NaCl is 1:2. This means that for every 1 mole of CuCl2, 2 moles of NaCl are produced.

Step 1: Convert the mass of CuCl2 to moles using its molar mass.

Molar mass of CuCl2 = 63.55 g/mol (atomic mass of Cu) + 2 × 35.45 g/mol (atomic mass of Cl)

Molar mass of CuCl2 = 134.45 g/mol

Moles of CuCl2 = 31.0 g / 134.45 g/mol ≈ 0.231 mol

Step 2: Use the stoichiometry to calculate the theoretical yield of NaCl.

Since the stoichiometric ratio between CuCl2 and NaCl is 1:2, the moles of NaCl produced will be twice the moles of CuCl2.

Moles of NaCl (theoretical) = 2 × 0.231 mol = 0.462 mol

Step 3: Convert the moles of NaCl to grams using its molar mass.

Molar mass of NaCl = 22.99 g/mol (atomic mass of Na) + 35.45 g/mol (atomic mass of Cl)

Molar mass of NaCl = 58.44 g/mol

Theoretical yield of NaCl = 0.462 mol × 58.44 g/mol ≈ 26.96 g

Now, we can calculate the percent yield using the formula:

Percent yield = (Actual yield / Theoretical yield) × 100

Percent yield = (21.2 g / 26.96 g) × 100 ≈ 78.7%

Option D

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We anticipate that the resulting aqueous solution will be basic.

Weak acids are those that do not dissociate completely in solution. A weak acid is defined as any acid that is not a strong acid. A weak acid's strength is determined by how much it dissociates; the more it dissociates, the stronger the acid.

A conjugate base is the base member, X-, of two compounds that transform into one another by gaining or losing a proton. In a chemical reaction, the conjugate base has the ability to gain or absorb a proton.

Calcium propionate [Ca(CH₃CH₂COO)₂

We know that Calcium propionate dissolves completely in water.

So,

Ca(CH\(_3\)CH\(_2\)+COO)\(_2\)→Ca\(^2^+\) +2CH\(_{3}\)CH\(_2\)COO−

Water can protonate the propionate anion. When everything is balanced,

CH\(_3\)CH\(_2\\\)COO−+H2O⇌CH\(_3\)CH\(_2\)COOH+OH−

We anticipate that the resulting aqueous solution will be basic.

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decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

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Answer: true

Explanation:

Hydrogen peroxide used as a 6% solution is used to easy wounds on pores and skin as an antiseptic ,and it is also used as a stronger answer (>30%) as an antimicrobial agent and an oxidizing agent.

Hydrogen peroxide (H2O2) is a topical antiseptic utilized in wound cleaning which kills pathogens through oxidation burst and nearby oxygen manufacturing. H2O2 has been said to be a reactive biochemical molecule synthesized by means of various cells that impacts biological behavior thru multiple mechanisms: alterations of membrane potential, technology of latest molecules, and changing intracellular redox balance, which leads to activation or inactivation of different signaling transduction pathways.

As an disinfectant, it additionally treats wounds. Hydrogen peroxide capabilities as an oxidizing element in personal care merchandise, which includes colorants and toothpastes, and gives a lightening/whitening impact.

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Answer:

The solution turns purple because ammonia is a base.

The solution turned red.

Ammonia gas is neutral, but ammonia solution ( ammonium hydroxide ) is a base.

Adding vinegar to ammonia suppresses its dissociation hence decrease in hydroxyl ion concentration.

If more ammonia is added to the solution, the pink color re-appears.

STP signifies standard temperature and pressure. These conditions are at 1 atmospheric pressure and 0 degrees Celsus, It has been said that at these conditions, one mole of a gas molecule is  22.4 liters of volume.

1.50 mol Cl2( 22.4 L / mol) = 33.6 L Cl2

Constitutional isomerism is a type of isomerism in which molecules have the same atoms, but the order in which the atoms are bonded is different. They can have the same molecular formula but different functional groups

The members of the following set of compounds are all alcohols:

2-Butanol

3-Methyl-1-pentanol

2-Methyl-2-butanol

Pentan-1-ol

2-Methyl-1-butanol

1-Pentanol

Therefore, we must recognize the structural formula that represents the same compound and the one that represents constitutional isomers of each other.The constitutional isomers are

2-Methyl-1-butanol, 3-Methyl-1-pentanol, and 2-Methyl-2-butanol.

The following two pairs of alcohols represent the same compound:

2-Butanol and Pentan-1-ol.

Their structural formulas contain five carbon atoms.

1-Pentanol and 3-Methyl-1-pentanol. They contain five carbon atoms and are primary alcohols as well.Each alcohol has its own unique structural formula that separates it from other compounds. Isomers are compounds that have the same chemical formula but differ in structure, and this includes constitutional isomers.Therefore, the structural formulas that represent the same compound are Pentan-1-ol and 2-Butanol. The structural formulas that represent constitutional isomers are 2-Methyl-1-butanol, 3-Methyl-1-pentanol, and 2-Methyl-2-butanol.

Constitutional isomers are compounds that have the same number and kind of atoms, but the atoms are connected differently.

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a. in colder water. Cold water has higher oxygen solubility due to the inverse relationship between temperature and gas solubility.

The solubility of gases, including oxygen, in water is affected by various factors. One of the key factors is temperature. In general, the solubility of gases decreases with increasing temperature. This means that colder water can hold more oxygen in solution compared to warmer water. When water is cold, its molecules are closer together, creating a denser environment. This dense environment provides more opportunities for oxygen molecules to dissolve and stay in solution. On the other hand, warmer water molecules move more vigorously and are further apart, reducing the chances for oxygen to dissolve and stay in solution. Therefore, colder water has a greater capacity to hold oxygen in solution. This is an important factor in aquatic ecosystems as it affects the availability of dissolved oxygen for marine organisms that rely on it for respiration.

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The reaction between acetic acid and ammonia to form ammonium acetate does not occur to any appreciable degree due to an unfavorable equilibrium

There are several potential acids and bases that can react with each other, but not all reactions occur to an appreciable degree. In chemistry, the equilibrium constant is used to determine the extent to which a chemical reaction occurs. When the equilibrium constant is very small, it means that the reaction is not favorable, and the reaction will not proceed to any significant degree.
One example of a potential acid-base reaction that does not occur to any appreciable degree due to an unfavorable equilibrium is the reaction between acetic acid (CH3COOH) and ammonia (NH3) to form ammonium acetate (CH3COONH4). This reaction is reversible, and the equilibrium constant (Kc) for the forward reaction is very small, indicating that the reaction does not occur to any significant degree.
The reason for this unfavorable equilibrium is that the ammonium acetate that forms is a weak acid, and it can react with water to form the original reactants, acetic acid and ammonia. Therefore, the equilibrium between the reactants and products is shifted towards the reactants, and the reaction does not occur to any appreciable degree.
In summary, the reaction between acetic acid and ammonia to form ammonium acetate does not occur to any appreciable degree due to an unfavorable equilibrium.

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Liquids separate into layers during an extraction/while using a separatory funnel based upon their densities.

The Separatory funnel is used to divide two immiscible liquids, or liquids that are incapable of mixing or dissolving with one another.

When two immiscible liquids are introduced into a separatory funnel and left undisturbed, they will form two distinct layers based on their respective densities.

What is a separatory funnel and how does it work?

The separatory funnel is a laboratory glassware that is used for separating two immiscible liquids with different densities.

It is made up of a conical shape glass container with a tap and stopper. One of the liquids is added to the separatory funnel, and the other is added on top.

The tap is then opened, and the bottom layer is released.

The tap is then closed, and the top layer is poured into another container.

The principle of separating funnel is based upon the difference in the densities of the two immiscible liquids.

When two immiscible liquids, one denser than the other are placed in a separating funnel and allowed to stand undisturbed for some time, the liquids will form two distinct layers.

The denser liquid forms the lower layer while the less dense liquid forms the upper layer.

When the tap of the separating funnel is opened, the denser liquid will flow out first, followed by the less dense liquid.

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Answer:

Number of moles of oxygen = 0.037  mol

Explanation:

Given data:

Total pressure = 98.5 KPa

Partial pressure of nitrogen = 22.0 KPa

Partial pressure of argon = 50.0 KPa

Volume = 3.5 L

Temperature = 25°C (25+273= 298K)

Number of moles of oxygen = ?

Solution:

Total pressure = P(N₂) + P(O₂) + P(Ar)

98.5 KPa = 22.0 KPa +P(O₂) + 50.0 KPa

98.5 KPa = 72.0 KPa +P(O₂)

P(O₂)  = 98.5 KPa - 72.0 KPa

P(O₂)  = 26.5 KPa

KPa to atm:

26.5 KPa/ 101 = 0.262 atm

Number of moles of oxygen:

PV = nRT

n = PV/RT

n = 0.262 atm × 3.5 L / 0.0821 atm.L/mol.K  × 298 K

n = 0.917atm.L /24.47atm.L/ mol

n = 0.037  mol

The type of model represented by the information given in the image is a mathematical model (option C).

A model is a simplified representation used to explain the workings of a real world system or event.

The following are the types of model there are;

Based on the equation given above, the type of model illustrated is a mathematical model.

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Answer:the answer is A

Explanation:

Answer:

9.62 μm

Explanation:

From the question given above, the following data were obtained:

Frequency (f) = 31.2 THz

Wavelength (λ) =..?

Next, we shall convert 31.2 THz to Hz.

This can be obtained as follow:

Recall:

1 THz = 1×10¹² Hz

Therefore,

31.2 THz = 31.2 THz × 1×10¹² Hz / 1 THz

31.2 THz = 3.12×10¹³ Hz

Therefore, 31.2 THz is equivalent to 3.12×10¹³ Hz.

Finally, we shall determine the wavelength (λ) infrared radiation as follow:

Frequency (f) = 3.12×10¹³ Hz.

Velocity (v) = 3×10⁸ m/s

Wavelength (λ) =..?

V = λf

3×10⁸ = λ × 3.12×10¹³

Divide both side by 3.12×10¹³

λ = 3×10⁸ / 3.12×10¹³

λ = 9.62×10¯⁶ m

Converting 9.62×10¯⁶ m to micro metre (μm) we have:

1 m = 1×10⁶ μm

Therefore,

9.62×10¯⁶ m = 9.62×10¯⁶ m × 1×10⁶ μm / 1 m

9.62×10¯⁶ m = 9.62 μm

Therefore, the wavelength of the infrared radiation is 9.62 μm

Answer:

Carbon dioxide molecule

Answer:a , d ,e

Explanation:

jusy took quiz

Factors about the reactants allows them to be mixed and one major product is isolated, as opposed to a mess of products is Choose reactants that only have one alpha proton, or are symmetric.

A chemical substance that is a reactant is one that is present at the beginning of a chemical reaction and changes as the reaction develops. They may also be referred to as reagents or beginning ingredients.Protons and electrons are drawn to one another because they have opposing electric charges. Two protons repel one another because like charges repel one another.The stable particle known as a proton does not disintegrate into other particles. Free protons are frequent and frequently produced when there is enough energy to detach protons from electrons.Plasma contains unbound protons. Protons make up around 90% of cosmic rays.

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Answer:

A

Explanation:

Cuz that's the answer for your question

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 25 \times {2.5}^{2} \\ = 12.5 \times 6.25 \\ = 78.125 \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

Answer:true

Explanation:

Answer:

it is definitely true.

Explanation:

water is natural, air is natural, minerals are natural, forests are natural, wildlife is natural and soil is natural, since it is now manmade it has to be natural

Answer:

hoi

Explanation:

For part of our orbit the northern half of Earth is tilted toward the Sun. This is summer in the northern hemisphere; there are longer periods of daylight, the Sun is higher in the sky, and the Sun's rays strike the surface more directly, giving us warmer temperatures. The north pole is in constant daylight!

Explanation:

Answer:

The answer is C because it is an average of the various isotopes of an element.

Explanation:

Hope this helps!