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# 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?

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

Can you answer this question?

## 1 Answer

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Ans : (A)
$3.16 \times 10^{-7}m^3$
answered May 28, 2014