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Answer: loses 2 electrons

Explanation:

Ni Atom loses 2 electrons , Option 2 is the correct answer.

Electron is a subatomic particle (denoted by the symbol e⁻)

or  whose electric charge is negative one elementary charge.

Electrons belong to the first generation of the lepton particle family and are generally thought to be elementary particles because they have no known components or substructure.

The electron has a mass that is approximately 1/1836 that of the proton.

Ni(s) + 2HCl(aq) - NiCl(aq) + H₂(g)

This is an oxidation-reduction (redox) reaction:

2 H⁺ + 2 e⁻ → 2 H (reduction)

Ni - 2 e⁻ → Ni ²⁺ (oxidation)

HCl is an oxidizing agent, Ni is a reducing agent.

Therefore Ni Atom loses 2 electrons , Option 2 is the correct answer.

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Answer:

Free Energy (G) can either increase or decrease for a reaction when the temperature increases. It depends on the entropy (S) change. The change in a quantity is represented by the Greek letter delta. ... Hence, when the temperature increases the numeric value of the free energy becomes larger.

Explanation:

The change in Gibbs free energy (ΔG) of a chemical reaction depends on the initial and final states of the reactants and products, as well as on the temperature and pressure conditions of the reaction.

The Gibbs free energy of a reaction tells us whether a reaction is spontaneous or not under given conditions, with negative ΔG values indicating a spontaneous reaction and positive ΔG values indicating a non-spontaneous reaction.

The temperature of the reactants and products is important in determining the Gibbs free energy change because the Gibbs free energy change is related to the enthalpy change (ΔH) and the entropy change (ΔS) of the reaction through the equation:

ΔG = ΔH - TΔS

where T is the temperature in Kelvin.

Thus, the temperature of the reactants and products must be known in order to calculate the Gibbs free energy change of a reaction accurately.

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Answer:

8.07×10²³ units

Explanation:

6.02×10²³×1.34

8.07×10²³ units

Answer:

2.41 mol

Explanation:

53.9 L x 1 mol/22.4 L = 2.41 mol

Explanation:

When added to water, aluminum sulfate causes microscopic impurities to clump together into larger and larger particles. These clumps then settle to the bottom of the container and can be filtered out. This makes the water safer to drink

,

Answer:

D because i did this last week and got it right.

A positive H indicates that the potential energy of products is higher than the potential energy of reactants.

A potential energy diagram is a diagram which shows the energy content of reactants and products as well as the energy changes that occur in a reaction.

A positive H in a reaction indicates that the reaction is endothermic and that products have a higher potential energy than reactants.

Therefore, a positive H indicates that tje potential energy of products is higher than the potential energy of reactants.

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Answer:

I think its the last one

Explanation:

Super sorry if its incorrect.

Answer:

23 neutrones.

Explanation:

Bajo el modelo atómico actual, los átomos están hechos de neutrones (Particulas sin carga y número másico de 1), electrones (Partículas con carga de -1 y número másico de 0) y protones (Partículas con carga de +1 y número másico de 1).

El elemento contiene 22 electrones y carga neutra. Esto significa que contiene igual número de protones:

22 protones.

Como el número másico es de 45 y los protones aportarán solo 22 de número másico, el elemento debería tener:

23 neutrones para completar así, el número másico.

Answer:

chemical energy

Explanation:

This energy process is called exothermic when the reactants are at a higher energy level as compared to the products while it is an endothermic process if the reactant require energy to form products.

The covalent bonds that bring atoms together in the form of molecules store potential energy. This is commonly referred to as chemical energy.

When two different elements bond together to form compounds , the covalent bonds initial present are broken and new bonds are formed .

The energy level of the new formed compound will be lower than the individual atom as the difference in energy level of both the elements is released as heat.

This energy process is called exothermic when the reactants are at a higher energy level as compared to the products while it is an endothermic process if the reactant require energy to form products.

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Answer:

as for my answer is C.....

Answer:

It forms a barrier that prevents corrosive substances from reaching the underlying steel or iron. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc. The zinc protects its base metal by corroding before iron.

Explanation:

Answer:

It protects it from corrosion.

Explanation:

Zinc protects iron and steel from the relentless forces of corrosion. Galvanizing iron and steel by dipping them in molten zinc creates an alloy that can, in the right environmental conditions, protect the iron or steel beneath it for 100 years or more.

Answer:

it could harbor dangerous chemicals that damage the car if released

it could be holding parts together

it could have something dangerous inside

According to stoichiometry as 162.955 g of phosphorous pentanitride has 92.919 g of phosphorous , thus 245 g of phosphorous pentanitride   will have 139.7 grams of phosphorous.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related 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.It is important as it helps the chemical reactions to obey law of conservation of mass.

As  162.955 g of phosphorous pentanitride=92.919 g of phosphorous

∴ 245 g of phosphorous pentanitride   =245×92.919/162.955=139.702 g.

Thus, 139.702 g  of phosphorus can be recovered from 245.0 g triphosphorus pentanitride.

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Answer:

0.08911760029829444

Explanation:

hop that this what you wanted

Answer:

1 mole of iron (Fe) = 56 g (molar mass)

Since 56 g of iron = 1 mol.

Therefore, 112 g of iron= 1/ 56 ×112 mol = 2 mol.

Explanation:

Answer:

it would increase to twice what it was

Answer:

12.70

Explanation:

Answer:

10-7mol/l

Explanation:

Answer: 10-7mol/l

Explanation:

BRAINS

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☃ The chemical reaction in which heat is released to the surroundings is called exothermic reaction. The amount of heat energy released is written along with products. This indicates that heat is given out.

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ツ Hope I helped! ♡

☂ Have a wonderful day / night ! ☄

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Answer:

1. c) shiny

2) True. Reactivity is a chemical property.

1. A metal is shiny

2. yes

that's all

Answer:

3

Explanation:

Answer:

Saturated alkyne

Explanation:

The hydrocarbons are known as the compounds which is made up of only carbon and hydrogen atoms. They may be saturated or unsaturated based on the number of bonds present. The molecule H-C≡C-H is an Unsaturated alkyne. The correct option is B.

The hydrocarbons in which the carbon and hydrogen atoms are connected through double or triple bonds are known as unsaturated hydrocarbons. Here ethyne is an unsaturated hydrocarbon.

Ethyne is an alkyne which have the C-C  and C-H atoms connected through triple and single bonds.

Thus ethyne is option B.

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Answer:

2276.1 Joules

Explanation

One calorie is equal to 4.184 Joules. So, 544 calories will be equal to 544*4.184=2276.1 Joules

Answer:

True.

Explanation:

Answer:

In a nonpolar covalent bond, the atoms share electrons equally with one another.

Explanation:

Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecule.