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3 years ago

What number of atoms does K2CO3 have?

Chemistry

2 answers:

stich3 [128]3 years ago

7 0

<span>K= 2 C= 1 O=3 K2CO3= 6 atoms
</span>
Potassium carbonate<span> (K2C03)
</span>

k0ka [10]3 years ago

5 0

K2CO3 can be thought to contain 6 atoms (2 K, 1 C, 3O).

If you are given grams of K2CO3 you can divide by the molar mass to get to moles and then multiply by Avogadro's number.

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DaniilM [7]

Answer: a) $H_3O^++CH_3O^-\rightleftharpoons CH_3OH+H_2O$

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base : methoxide ion

conjugate acid : methanol

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conjugate base: chloride ion

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conjugate acid : ammonia

conjugate base: methoxide ion

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

The species accepting a proton is considered as a base and after accepting a proton, it forms a conjugate acid.

The species losing a proton is considered as an acid and after loosing a proton, it forms a conjugate base

For the given chemical equation:

a) $H_3O^++CH_3O^-\rightleftharpoons CH_3OH+H_2O$

acid : hydronium ion

base : methoxide ion

conjugate acid : methanol

conjugate base: water

b) $CH_3CH_2O^-+HCl\rightleftharpoons CH_3CH_2OH+Cl^-$

acid : hydrogen chloride

base : ethoxide ion

conjugate acid : ethanol

conjugate base: chloride ion

c) $NH_2^-+CH_3OH\rightleftharpoons NH_3+CH_3O^-$

acid : methanol

base : amide ion

conjugate acid : ammonia

conjugate base: methoxide ion

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2 years ago

What is the percent composition by mass for hydrogen in water (H2O)?

saw5 [17]

Explanation:

Percentage composition = 2/18 = 11.11%.

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3 years ago