Question

Question 4(h)
Express the number appearing in the following statements in standard form:
(h) 60,230,000,000,000,000,000,000 molecules are contained in a drop of water weighing 1.8 gm.

Answer 1

(h) Number of molecules in a drop = 60,230,000,000,000,000,000,000
of water weighing 1.8gm = 6023 $\times$ 10,000,000,000,000,000,000
$=6.023\times 1000\times 10,000,000,000,000,000,000$
$=6.023\times {10}^{22}$