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4 years ago

Atoms contain positive, negative, and neutral. what happens when two positively charged particles are close together?

Chemistry

2 answers:

mote1985 [20]4 years ago

8 0

<h2>A. They repel each other</h2>

balandron [24]4 years ago

3 0

Answer:

they repel each other

Explanation:

A is the ans

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A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solutio

ira [324]

The amount of the solute is constant during dilution. So the mole number of HCl is 2*1.5=3 mole. The volume of HCl stock is 3/12=0.25 L. So using 0.25 L stock solution and dilute to 2.0 L.

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4 years ago

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PLEASE HELP ME!!!!!!!! Explain why understanding the process of combustion requires using an atomic model of mass and not a cont

Rom4ik [11]

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There must be Fuel to burn.

There must be Air to supply oxygen.

There must be Heat (ignition temperature) to start and continue the combustion process.

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4 years ago

In the scientific process, what is the purpose of the experiment? to prove the hypothesis true to test the hypothesis to turn th

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3 years ago

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When writing a formula for a compound having a transition metal in it, _____.

DanielleElmas [232]

Answer:

The correct option is;

It is always necessary to include a Roman numeral after the symbol of the metal

Explanation:

The transition metals can form ionic compounds with other elements by giving different number of electrons such that the transition metals can combine to form compounds in which they have different oxidation states

Therefore, in a compound formed by a transition metal, the value of the transition metal's valency or oxidation state in the compound is indicated by the inclusion of an equivalent Roman numeral after the transition metal in the name of the chemical formula of the compound

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3 years ago

Write a balanced chemical equation for this reaction. What is the coefficient for hydrochloric acid in the reaction

Leviafan [203]

The question is incomplete, here is the complete question:

Write a balanced equation for the neutralization of calcium hydroxide by hydrochloric acid. What is the coefficient for hydrochloric acid in the reaction.

<u>Answer:</u> The balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.

<u>Explanation:</u>

Neutralization reaction is defined as the reaction in which an acid reacts with a base to produce a salt and water molecule.

Balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side will be equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.

The balanced chemical equation for the reaction of calcium hydroxide and hydrochloric acid follows:

$Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O$

By Stoichiometry of the reaction:

1 mole of calcium hydroxide reacts with 2 moles of hydrochloric acid to produce 1 mole of calcium chloride and 2 moles of water molecule.

Hence, the balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.

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4 years ago