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A gas mixture contains \(\mathrm{O}_2\) and \(\mathrm{N}_2\) in the ratio of \(1: 4\) by weight. The ratio of their number of molecules is
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\(7: 32\)
\(\because\) The ratio of \(\mathrm{O}_2\) and \(\mathrm{N}_2\) by weight is \(1: 4\).
\(\therefore\) the ratio of \(\mathrm{O}_2\) and \(\mathrm{N}_2\) by moles \(=\frac{1}{32}: \frac{4}{28}\)
\(=7: 32\)
\(\therefore\) the ratio of \(\mathrm{O}_2\) and \(\mathrm{N}_2\) by moles \(=\frac{1}{32}: \frac{4}{28}\)
\(=7: 32\)
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