Question

calculate the percentage of oxygen in H2O2​

Answer 1

Chemical formula of hydrogen peroxide is H2O2.

Atomic mass of O is 16 u.

So mass of 2 O = 2 *16 = 32

Molecular mass of H2O2 = 2*1 + 2*16 = 34

Mass percent of O = Total mass of O in compound/ Total mass of compound * 100 = 32/34 *100 = 94.12

Answer 2

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