answer: 94.12
Step-by-step explanation:
chemical formula of hydrogen peroxide is H2O2.
atomic mass of 0 is 16 u.
so mass of 2 O= 2× 16 =32
molecular mass of H2O2 = 2×1 +2×16=34
mass percent of 0= total mass of 0 in compound/ total mass of compound * 100= 32/34 *100=94.12