Answer:
(a) Number of moles of \[{{H}_{2}}S{{O}_{4}}=\frac{MV}{1000}\]
\[=\frac{0.02\times
100}{1000}=0.002\]
Number of molecules of
\[{{H}_{2}}S{{O}_{4}}=0.002\times
6.023\times {{10}^{23}}\]
\[=1.246\times {{10}^{21}}\]
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