Question

Question 115(iii)

Express the following in standard form:
Mass of a molecule fo hydrogen gas is about $0.00000000000000000000334$ tonnes.

Answer 1

Mass of a molecule fo hydrogen gas is about $0.00000000000000000000334$ tonnes
Standard form $=0.334\times {10}^{-20}\times {10}^{-1}$
$=3.34\times {10}^{-21}$