3 years ago

Help me please

Chemistry

1 answer:

kati45 [8]3 years ago

5 0

Answ????

Explanation:

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Chemical and physical properties of calcite

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Answer:

Chemical Classification Carbonate

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Describe the valence electrons in nitrogen and how it could bond to other atoms.

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Answer:

Each nitrogen molecule consists of two atoms of nitrogen that are bonded by a triple covalent bond. This is a direct consequence of the fact that each nitrogen atom has 5 valence electrons. Each atom can thus complete its octet by sharing three electrons.

Explanation:

Sorry i had to look it up i didn't know this answer

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3 years ago

When two aqueous solutions are combined the reaction forms a solid that settles out of solution. What is this solid called?

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How many grams are of sodium chlorate are present in a 2.45 mole sample?

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Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NaCl, or 58.44277 grams.

Explanation:

I hope this helps!!

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3 years ago

Read 2 more answers

. how many lone pairs of electrons are present in the lewis structure of calcium sulfide?

miv72 [106K]

Answer:
<u>Four</u>

Explanation:
Calcium Sulfide is an ionic compound made up of Ca²⁺ and S²⁻.
Ca²⁺ is formed as,

Ca → Ca²⁺ + 2 e⁻

These two electrons are accepte by Sulfur as,

S + 2 e⁻ → S²⁻

So, before accepting 2 electrons S was having six valence electrons, after accepting two electrons from Ca it has 8 electrons which are present in four pairs as shown below,

7 0

4 years ago