3 years ago

How many neutron and protons are in lithium-7?

Chemistry

1 answer:

ikadub [295]3 years ago

6 0

So it contains three protons and four neutrons

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If 20.0 g LIOH react with excess KCl, giving a 17.0

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The yield of lithium chloride is 1.92 grams.

Option D.

<h3><u>Explanation:</u></h3>

In this reaction, we can see that 1 mole of lithium hydroxide reacts with 1 mole of potassium chloride to produce 1 mole of lithium chloride and 1 mole of potassium hydroxide.

Molecular weight of lithium hydroxide is 24.

Molecular weight of lithium chloride is 42.5.

So 24 grams of lithium hydroxide produces 42.5 grams of lithium chloride.

So, 20 grams of lithium hydroxide produces $20 * 24 / 42.5$ grams =11. 29 grams of lithium chloride.

But this is when the yield is 100%.

But yield is 17%.

So the yield is 1.92 grams of lithium chloride.

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2 years ago

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

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Physical weathering

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3 years ago

The ability to do work or cause change is

Ilia_Sergeevich [38]

The ability to do work or cause change is
Energy

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2 years ago

Give at least two ways to know if a reaction is endothermic or exothermic

mafiozo [28]

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An exothermic reaction is a chemical reaction that releases energy by light or heat. Endothermic reaction is a chemical reaction that absorbs energy or heat from its surroundings

Explanation:

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3 years ago

Identify three nonmetal atoms that, when bonded covalently, have an argon electron configuration.

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Phosphorus

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Like PCl3

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Explanation:

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