Question

calculate the number of moles in 19g of hydrogen peroxide​

Answer 1

Answer:

1) Atomic mass of H = 1.

2) Atomic mass of O = 16.

3) Molecular mass of H2O2= (2 × 1) + (2 × 16) = 34 gm.

4) Since 34 gm of hydrogen peroxide (H2O2) = 1 mole.

5) Hence 17 gm of H2O2 = 1/ 34

Explanation:

I copy it from Google