Question

Which formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)?

A. molar mass of H + molar mass of O
B. 2 × molar mass of H + molar mass of O
C. molar mass of H + 2 × molar mass of O
D. 2 × molar mass of H + 2 × molar mass of O

Answer 1

Answer:

D. 2 × molar mass of H + 2 × molar mass of O

Explanation:

Hope this helps :)

Answer 2

Given: The compound is hydrogen peroxide.

To find: We have to find the formula that can be used to calculate the molar mass of hydrogen peroxide.

Solution:

The chemical formula of hydrogen peroxide is $H_2O_2$.

The atomic mass of the H atom is 1 and the atomic mass of the Oxygen atom is 16.

Hydrogen peroxide has two hydrogen atoms and two oxygen atoms.

Thus its molar mass can be calculated as follows-

2×molar mass of H + 2 × molar mass of O.

Hence the correct option is D.