Which of the following has the smallest number of molecules?

Options

A. 0.1 mol of `CO_(2)` gas
B. 11.2 L of `CO_(2)` gas at N.T.P.
C. 22 g of `CO_(2)` gas
D. `22.4xx10^(3)mL` of `CO_(2)` gas

Answer

A

Explanation

0.1 mol `CO_(2), (11.2)/(22.4) = 0.5 mol CO_(2),`
`(22)/(44) = 0.5 mol CO_(2), (22400)/(22400) = 1 mol CO_(2)`