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Question 7
Which of the following contains maximum number of molecules?

(a) 1g CO2
(b) 1g N2
(c) 1g H2
(d) 1g CH4


Solution

We know, 16 g of CH4, 44g of CO2 and 28g of N2 consist of Avogardro number of particles.
But 2g of H2 consist of Avogadro number of particles.
1 g of H2=12NA=0.5NA=0.5×6.022×1023=3.011×1023

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