Question

a compound with an empirical formula of C4H4O and a molar mass of 136 g per mole what is the molecular formula of this compound?​

Answer 1

Answer:

C8H8O2

Explanation:

the empirical formula is C8H8Ois(4×12)+(4×1)+(1×16)=68g/mol.

to determine the molecular formula,divide the molecular molar mass by the empirical formula mass.

136/68=2

multiply the subscripts in the empirical formula by 2 get the molecular formula.

Molecular Formula=C8H8O2