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Rus_ich [418]
3 years ago
12

The empirical formula for a compound is CH2. Its molar mass is 140.1 g/mol. What is its molecular formula?

Chemistry
2 answers:
Alexxx [7]3 years ago
6 0

Answer:

c10h20

Explanation:

ki77a [65]3 years ago
3 0
The empirical formula CH₂ has a mass [(12 × 1) + (1 × 2)] = 14 g/mol

If the empirical formula is 14 g/mol,
and the molecular formula is ~140 g/mol

Then the multiple is = 140 g/mol ÷ 14 g/mol 
                                = 10

Therefor the molecular formula is 10(CH₂) = <span>C</span>₁₀<span>H</span>₂₀<span>  </span>
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