Question

A compound with the empirical formula of C2OH2. How much does the hydroxide portion weigh in regards to the entire compound?

Answer 1

Empirical formula is $C_2OH_2$

The total molecular mass is

$(12.01*2)+(1*16.00)+(2*1.00)=42.02g/mol$

The percentage hyroxide portion is

$12+2=14g/mol$

$\dfrac{14g/mol}{42.02g/mol}×100=33\%$