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Fudgin [204]
3 years ago
5

If 2a=3b and a=6 then b=

Chemistry
2 answers:
Ne4ueva [31]3 years ago
6 0

then b is 4

2a=3b since a=6

2x6=3b

12=3b

b=12/3

b=4

Naya [18.7K]3 years ago
4 0

Answer:

b=4

Explanation:

2a=3b

2a=2*6

2*6=12

2a=12

12=3b

12/3=4

b=4

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<span>Data:

1) molar mass: 58.0714 g.

2) mass analysis

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H: 3 g
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Solution
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<span>What is the percent composition of all the components in the liquid?

mass of C + mass of H + mass of O = 18g + 3g + 8g = 29 g

Percent composition:

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                               --------------
           Total               100%

What is the empirical formula of the compound?

Convert masses to number of moles by dividing each mass by the atomic mass of the correspondant element:

C: 18 g/ 12.0 g/mol = 1.5 mol

H: 3 g / 1.0 g/mol = 3 mol

O: 8 g / 16 g/mol = 0.5 mol

Divide each number of moles by the smaller, i.e. 0.5 mol

=> C: 1.5 mol / 0.5 mol = 3 mol
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C3 H6 O => 3 * 12 g/mol + 6*1 g/mol + 16 g/mol = 58 g/ mol

Secont, given that the molar mass is the same that the empirical mass, the molecular formula is the same empirical formula.

=> Molecular formula = C3 H6 O.

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