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2 years ago

What are particles in chemistry

Chemistry

2 answers:

vladimir2022 [97]2 years ago

5 0

Answer:

In the physical sciences, a particle (or corpuscule in older texts) is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass. ... The term 'particle' is rather general in meaning, and is refined as needed by various scientific fields.

Explanation:

mash [69]2 years ago

4 0

A small portion of matter

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The correct answer is 3.

A dynamic phase equilibrium is when a reversible reaction no longer changes its ratio of reactants to products. However, substances continue to move between the chemicals at an equal rate, which means the net change is 0. This is known as a steady state.

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3 years ago

Which of the following describes a chemical change?

Sphinxa [80]

Answer:

Explanation:

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3 years ago

What is ejected from the nucleus during alpha decay?

Aloiza [94]

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Alpha decay is a type of radioactive decay.
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3 years ago

The equilibrium constant for the formation of ammonia from nitrogen and hydrogen is 1.6 x 102. What is the form of the equilibri

madam [21]

Answer:

First option:

[NH3]2 / [N2][H2]3

Explanation:

First of all we need to determine the reaction:

N₂(g) + 3H₂(g) → 2NH₃(g)

1 mol of nitrogen can combine with 3 moles of hydrogen to produce 2 moles of ammonia.

Remember that Kc has to involve Molar concentrations of products / reactants

Concentration must be elevated to the stoichiometry coefficient

Kc for the reaction is: [NH₃]² / [N₂] . [H₂]³

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3 years ago

How many molecules are in 9.45 moles ? ( NaNO3)

Rzqust [24]

Answer:

There are 5.69*10²⁴ molecules in 9.45 moles.

Explanation:

The mole is defined as the amount of matter that particles have, that is, atoms and elementary entities.

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole and represents a quantity without an associated physical dimension. Avogadro's number applies to any substance.

Then the following rule of three can be applied: if 1 mole contains 6.023 * 10²³ molecules, 9.45 moles, how many molecules will it have?

$amount of molecules=\frac{9.45 moles*6.023*10^{23}molecules }{1 mole}$

Solving:

amount of molecules= 5.69*10²⁴⁴ molecules

<u><em>There are 5.69*10²⁴ molecules in 9.45 moles.</em></u>

8 0

2 years ago

What are particles in chemistry​

What are particles in chemistry