Total number of hydrogen atoms in $4.9 g$ of sulphuric acid is ________.

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Solution

Molecular weight of $H_{2} S O_{4}$ is 98 and each molecule of $H_{2} S O_{4}$ has 2 hydrogen atoms. So, total number of hydrogen atoms present in given sample are, $4.9 / 98 \times 2. N a = 0.1 N a = 6.023 \times 10^{22}$ .

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