Which of the following has maximum number of molecules?

a. 7g N2

b. 2g H2 

c. 8g O2

d. 20 g NO2

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2 Answers

Option : (b) 2g H2

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Correct Answer -(b)\(2g\,H_2\)

7g of \(N_2=\frac14 \text{ mol of } N_2\)

2g of \(H_2=1 \text{ mol of } H_2\)

16g of \(NO_2=0.35\text{ mol of } NO_2\)

16g of \(O_2=0.5 \text{ mol of } O_2\)

\(\therefore\) 2g of \(H_2\) has maximum number of molecules.

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