A mixture of gases contains \( \mathrm{H}_{2} \) and \( \mathrm{O}_...

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A mixture of gases contains \( \mathrm{H}_{2} \) and \( \mathrm{O}_{2} \) gases in the ratio of \( 1: 4(\mathrm{w} / \mathrm{w}) \). What is the molar ratio of the two gases in the mixture ?
(1) \( 4: 1 \)
(2) \( 16: 1 \)
(3) \( 2: 1 \)
(4) \( 1: 4 \)
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