Question

Express the number appearing in the following statements in standard form :

(v) $60,230,000,000,000,000,000,000$ molecules are contained in a drop of water weighing $1.8g$.

Answer 1

Expressing the molecules contained in a drop of water weighing $1.8g$ in the standard form

Number of molecules contained in a drop of water weighing $1.8g$ $=60,230,000,000,000,000,000,000$

$=6.023\times 10000000000000000000000$

$=6.023\times {10}^{22}$

Hence, number of molecules contained in a drop of water weighing $1.8g$ is $6.023\times {10}^{22}$.