Question

A sample of a compound contains 30.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compound’s molecular formula?

A. CH

B. C2H2

Please help... I have broken it down to these two and I really need help.

Answer 1

C, C6H6

Step-by-step explanation:

For edge

Answer 2

You seems to look worried so i will answer your question.
The correct answer is C6H6 as it has a molar mass of 73.07 grams per mole and it is the sample of compound that sums up with 78.12 grams per mole.
CH has 13.02 grams per mole.C2H2 has a molar mass of 26.04.

Hope this helps you : )
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