Asample 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

i have broken it down to these two and i really need .

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 : )
If have more questions feel free to ask me :D

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)