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A gas is found to have formula [CO]_x. Its VD is 70. The value of x must be:

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answer is B.

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Detailed Solution

$mol . wt = 2 \times V . D = 2 \times 70 = 140 (CO) x = 140 (12 + 16) x = 140 28 x = 140 x = \frac{140}{28} = 5$

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