Determine the number of moles present in each compound. 6.50 g ZnSO4.

Answer:

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Explanation:

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Answer:

51.75 moles

Explanation:

2NH3   ⇒   N2   +   3H2

2           :      1      :      3        

34.50                                  (moles)

⇒ \(n_{H2\) = 34.50 × 3 ÷ 2 = 51.75 (moles)

Answer:

But since the solubility product constant for each compound is provided, their relative solubility can be ranked from highest to lowest. Depending on the ranking above, it is evident that aluminum hydroxide Al(OH)3 A l ( O H ) 3 has the lowest solubility at 25 Celsius degreesAs temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C

Answer:

option C.there is an accumulation of carbon dioxide.

Explanation:

\(C6H_14\)is the molecular formula for Hexane, a hydrocarbon. The correct model for \(C6H_14\) is D. Option D is correct answer.

/\/\/\/:Hexane (\(C6H_14\)) is an alkane with a chain of six carbon atoms, having 14 hydrogen atoms. The bond angles of carbon atoms in hexane are 109.5 degrees, and carbon atoms in hexane have a tetrahedral geometry. The representation of a molecule in a model helps to visualize the 3D structure of the molecule. A simple way to represent the 3D structure of hexane is by using the wedge-and-dash notation. In this notation, solid wedges represent bonds coming out of the plane of the paper towards us, and dashed lines represent bonds going back into the plane of the paper away from us. Using this notation, the correct model of hexane (\(C6H_14\)) would be D. /\/\/\/.

The correct option is D.

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Answer:

ammonia molecules. Similar factors may be derived for any pair of substances in any chemical equation. Example 4.8. Moles of Reactant Required in a Reaction.

Explanation:

The amount of heat gained by the water is 500 calories. Thus, option D is correct.

Given:

Mass of water (m) = 100 g

Change in temperature (ΔT) = 30°C - 25°C = 5°C

The specific heat capacity of water (c) is approximately 1 calorie/gram°C.

Now, the amount of heat gained by the water,

Q = mcΔT

Where:

Q is the heat gained or lost by the substance

m is the mass of the substance

c is the specific heat capacity of the substance

ΔT is the change in temperature

Plugging in the values into the formula:

Q = 100 × 1 × 5

Q = 500 calories

Therefore, the amount of heat gained by the water is 500 calories.

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Iron l is said to have a high permeability. High coercivity, high retentivity, and high permeability materials make up the permanent magnets. An object made of a substance that has been magnetized and produces its own persistent magnetic field is referred to as a permanent magnet.

In contrast to an electromagnet, which is made of a coil of the wire wrapped around a ferrous core and needs an electric current to create a magnetic field, a permanent magnet's magnetism is "always on" and it creates its own permeability magnetic field. A common example is a refrigerator magnet used to the keep notes on the door of the refrigerator.

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Answer:

Physical state of reactants

Temperature

Concentration of reactants

Presence of a catalyst

Explanation:

The larger the surface area of a reactant, the faster the rate of the reaction. If the reactant is in powdered form, the reaction takes place faster than when the reactant is in solid or block form. This is due to the fact that the latter has larger surface area

Increase in temperature causes reactant molecules to gain kinetic energy thus increasing the rate if reaction

Answer:

Answer A

Explanation:

When light enters a lense it bends and changes direction, and then does this again when it leaves. leaving the correct image in the center

Answer

The theoretical Van't Hoff factor i for C12H22O11 is 1

Explanation

The Van't Hoff factor, i, is the number of particles formed in a solution from one formula unit of solute.

The Van't Hoff factor, i, is a property of the solute. In an ideal solution, i does not depend on the concentration of the solution.

For a nonelectrolyte, like (C12H22O11), which does not separate into ions in solution, Van''t Hoff factor, i = 1 because 1 molecule of sucrose (C12H22O11) forms only one particle in solution.f

The number of molecules in 10.0 gram of NaOH is 15 * 10²².

To solve this question, we need to understand some terms of mole concept,

Mole - It is the amount of substance containing same number of molecules or atoms as there are atoms in 12 gram of carbon-12 isotope.

Molecules - It is group of atoms bonded together, representing the smallest fundamental unit of a chemical compound taking part in chemical reaction.

Molecular weight - The sum of atomic masses of all atoms in molecules.

Avogadro number - It is the number of atoms, ions, electrons, molecules in one mole of substance. It is represented as NA.

NA = 6.0 * 10²³ (approx)

To calculate the number of molecules, we apply the formulae,

no. of molecules = moles * NA

moles = weight / molecular weight

moles = 10.0 / 40

          = 0.25

Substituting this value to calculate number of molecules,

no. of molecules = 0.25 * 6.0 * 10²³

                            = 15 * 10²²

Therefore the number of molecules of in 10.0 g of NaOH is 15 * 10²².

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Answer:

83 mL

Explanation:

Use the dilution equation M1V1 = M2V2

M1 = 18 M

V1 = ?

M2 = 6.0 M

M2 = 250 mL

Solve for V1 --> V1 = M2V2/M1

V1 = (6.0 M)(250 mL) / (18 M) = 83 mL

The chemical element that gives the blood of a lobster a bluish tint is copper.

The blue color of lobster blood is due to a copper-based molecule called hemocyanin. Hemocyanin serves a similar function to hemoglobin in vertebrates, which is to transport oxygen to the tissues.

In vertebrates, hemoglobin contains iron atoms that bind to oxygen, giving the blood a red color when oxygenated. However, crustaceans like lobsters have evolved a different mechanism for oxygen transport. Instead of using iron, they use copper to bind with oxygen molecules.

Hemocyanin molecules consist of protein chains called subunits, each containing copper atoms. When oxygen is present, it binds to the copper atoms in hemocyanin, forming a complex called oxyhemocyanin. This oxyhemocyanin complex gives the lobster blood a blue color.

The blue tint arises because copper absorbs light in the red part of the spectrum and reflects or transmits light in the blue region. This interaction between light and the copper-based molecule results in the characteristic bluish color of lobster blood.

Overall, the presence of copper in the hemocyanin molecule is responsible for the blue tint observed in the blood of lobsters and other crustaceans, allowing them to efficiently transport oxygen throughout their bodies in an oxygen-rich aquatic environment.

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Answer:

C. Cl

Explanation:

B(boron) is 2.04

C(carbon) is 2.55

Cl(chlorine) is 3.16

so it is Cl(clorine).

I'm glad for you! Best of luck in life tbh

The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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Answer:

Volcanic eruptions is an example of a constructive force i believe.

Answer: Sediment, Techtonic plates, Crust deformation, and Volcanoes

Explanation:

Sediment (Deltas, sand dunes, etc.)

Tectonic Plates Colliding (Mountains)

Crust deformation (Folding or Faulting)

Volcanoes (makes Islands)

Concentration of Hydronium ions in the Acetic acid is \(1.58\times10^{-5}\)

Calculation of concentration of acid:

pH of a solution is defined by the concentration of Hydronium ions in the solution.

Also, pH is defined as the negative of logarithm of \(log[H^+]\)

\(pH= -log[H^+]\)

pH of Acetic acid= 4.8

Therefore,

\(4.8= -log[H^+]\)

Taking antilog, we get

\([H^+] = 0.0000158M= 1.58\times10^{-5}M\)

The Hydronium concentration of the acetic acid is \(1.58\times 10^{-5}\)M.

As Acetic acid is a weak acid which means that ionization of acid is not complete, ie. 100%

That is why the concentration of Hydronium ions are less in the solution.

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When oil from a tin is poured through a funnel placed tightly into the neck of a bottle, the oil stays in the funnel because the air pressure inside the bottle prevents the oil from entering the bottle.

The force that air, whether compressed or unconfined, applies to whatever surface it comes into touch with is known as air pressure.

The air in the bottles exerts a force on the liquid that is to be poured inside it.

Since the air has no way of escaping, the oil cannot be poured into the bottle.

However, if a little space is allowed by the funnel for the air to escape, the liquid can then be poured into the bottle.

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Answer:

B. a ball in someones hands

Explanation:

Because this ball possess energy due to virtue of its position.

Answer:

B

Explanation:

It can be moved at any point in somebody's hands so it will be B

Answer:

If FDA finds that the evidence supporting the proposed claim is credible and the claim can be qualified to prevent it from misleading consumers,

fda.gov

Explanation:

The mixture magnet balance funnel is the equipment should be used to separate the mixture .

A magnet is a substance or object that generates a magnetic field. This magnetic field is invisible, but it is responsible for a magnet's most notable property: a force that attracts or repels other ferromagnetic materials such as iron, steel, nickel, cobalt, and so on.

A permanent magnet is an object made of magnetized material that generates its own persistent magnetic field. A refrigerator magnet, for example, is commonly used to hold notes on a refrigerator door. Ferromagnetic materials are those that can be magnetised and are also highly attracted to a magnet. (or ferrimagnetic). These include the elements iron, nickel, and cobalt, as well as their alloys, several rare-earth metal alloys, and some naturally occurring elements.

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Answer:

Emma's conclusion is not scientific. She is stating an opinion because she thinks her investigation was good which is not necessarily scientific.

By looking at a nuclear reaction, a fission reaction can be easily identified as it shows the breakdown of a larger atom into two or more smaller nuclei.

it is the formation of one or more new nuclides by the collision of two nuclei or external subatomic particles. Nuclear reactions are of two types:

In nuclear fission reaction, a heavier nucleus splits into several smaller lighter nuclei fragments and two or more neutrons. These fragments, or fission products, are either equal to or half of the original mass of the atom The reaction proceeds with a very high emission of energy.

\(238_{92}\)U → \(234_{90}\)Th + \(4_{2}\)\(\alpha\)

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Propane gas does pose a greater risk of fire than methane. Propane and methane are both hydrocarbon gases commonly used as fuels. The difference lies in their properties and characteristics that affect their flammability.

Propane (C3H8) has a higher energy content and a lower ignition energy compared to methane (CH4). This means that propane is more easily ignited and has a higher heat release rate when burned. Propane has a wider flammable range (2.4%-9.6% volume in air) compared to methane (5%-15% volume in air), making it more susceptible to combustion over a broader range of gas-to-air ratios.

Additionally, propane has a higher vapor density than air, which means that leaked propane gas tends to sink and accumulate in low-lying areas, increasing the risk of ignition and explosion. Methane, on the other hand, is lighter than air and tends to dissipate more rapidly.

However, it is important to note that both propane and methane can pose fire risks if mishandled or in the presence of an ignition source. Proper storage, handling, and ventilation are crucial to mitigate the fire hazards associated with any flammable gas.

In summary, due to its higher energy content, lower ignition energy, wider flammable range, and higher vapor density, propane gas generally poses a greater risk of fire compared to methane.

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Therefore, there are 73.3 grams of sodium in the final container.

Sodium chloride (NaCl) is a neutral compound, meaning it is neither acidic nor basic. It is a salt formed by the combination of sodium (Na+) and chloride (Cl-) ions, which have a neutral charge and therefore do not affect the pH of a solution.

Firstly, the number of moles of sodium in the solution will be:

n = C * V = 5.72 M * 564.2 mL = 3.21 moles

Next, we convert the number of moles of sodium to grams:

mass = n * atomic mass = 3.21 moles * 22.99 amu/mole = 73.3 grams

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