Question

Determine the molecular formula for a compound that has a molecular mass of 52.0 g/mole

and and is composed of 92.31% carbon and 7.69% hydrogen.

Answer 1

C4H4

Step-by-step explanation:

92.31% of 52.0 g/mol is 48.0012 g/mol

7.69% of 52.0 g/mol is is 3.9988 g/mol

Carbon has a gram-formula mass of about 12, which goes into 48.0012 about 4 times, so there should be 4 atoms of Carbon

Hydrogen has a gram-formula mass of about 1, which goes into 3.9988 about 4 times, so there should also be 4 atoms of hydrogen