# How many atoms are in .150 mole of Hg?

Mar 24, 2016

${N}_{A}$ $\times$ $0.150 \cdot m o l$, where ${N}_{A}$ $=$ $\text{Avogadro's number}$.

#### Explanation:

${N}_{A}$ $\left(\text{Avogadro's number}\right)$ $=$ $6.022 \times {10}^{23} \cdot m o {l}^{-} 1$. This is simply another number like a dozen or a score or a century or a gross or a thousand or a million. It has the property that ${N}_{A}$ ""^1H ATOMS has a mass of $1.00$ $g$ precisely.

So, the answer is simply: $0.150 \cdot m o l \times 6.022 \times {10}^{23} \cdot m o {l}^{-} 1$ $=$ ?? mercury atoms.

What is the mass of this number of mercury atoms?