Question

Which of the following has maximum number of molecules?

a. 7g N₂

b. 2g H₂ 

c. 8g O₂

d. 20 g NO₂

Answer 1

Option : (b) 2g H₂

Answer 2

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.