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  • Which of the following contains maximum number of molecules? (a) 1g CO_{2} (b) 1g N_{2} (c) 1g H_{2} (d) 1g CH_{4}

Which of the following contains maximum number of molecules?
(a) 1g CO_{2}
(b) 1g N_{2}
(c) 1g H_{2}
(d) 1g CH_{4}

Answers (1)

Answer: C

Solution.

Molar mass of other molecules are much higher than given mass, so number of molecules in them will be less than that in hydrogen.
1 g of H_{2} = \frac{1}{2} \times N_{A}
= 0.5 N_{A}
= 0.5 \times 6.022 \times 10^{23}
= 3.011 \times 10^{23}

Posted by

infoexpert26

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