# What molar quantity with respect to chloride ions is associated with 1.81xx10^24 "magnesium chloride formula units"?

Jun 9, 2017

Approx. $6.0 \cdot m o l$

#### Explanation:

We (i) calculate the molar quantity of chloride ions.......

$\left(1.81 \times {10}^{24} \cdot \text{magnesium chloride units")/(6.022xx10^23*MgCl_2*"units} \cdot m o {l}^{-} 1\right) = 3.0 \cdot m o l$

And since there are TWO moles of chloride ions per mole of salt....

(ii) we could also calculate the mass of this quantity.........