Question

Calculate the absolute mass of one molecule of $H_{2}S{O}_4$.

• A. $1.67\times {10}^{-27}g$
• B. $9.2\times {10}^{-28}g$
• C. $16.33\times {10}^{-23}g$
• D. $3.4\times {10}^{-20}g$

Answer 1

Answer: (C)

$16.33\times {10}^{-23}g$

The molar mass of $H_{2}S{O}_4$ is $98g/mol$.

1 mole of $H_{2}S{O}_4$ contains molecules.

Absolute mass of 1 molecule of $H_{2}S{O}_4=\frac{98g/mol}{6.0\times {10}^{23}molecules/mol}=16.33\times {10}^{-23}$ g.

Hence, the correct option is C.