The unit of length convenient on the atomic scale is known as an angstrom and is denoted by $ \dot {A} : 1\dot {A} = 10^{-10}m.$ The size of a hydrogen atom is about $ 0.5 \dot{A}$ what is the total atomic volume in $m^3$ of a mole of hydrogen atoms?

Question

$\begin {array} {1 1} (A)\;3.16 \times 10^{-7}m^3 & \quad (B)\;3.16 \times 10^{-9}m^3 \\ (C)\;3.16 \times 10^{-5}m^3 & \quad (D)\;3.16 \times 10^{-18}m^3 \end {array}$