Question ddaf8

May 18, 2017

"m"("AgNO"_3) = 581.4 $\text{g}$

Explanation:

The formula for moles of a (solid) compound is:

$\text{n" = "m"/"Mr}$ where $\text{n}$ is the number of moles, $\text{m}$ is the mass of the substance in grams and $\text{Mr}$ is the molar mass of the substance.

We can rearrange this formula given the no of moles and the molar mass:

$\text{m" = "nMr}$

"Mr"("AgNO"_3) =170 $\text{g}$ ${\text{mol}}^{-} 1$

"m"("AgNO"_3) = 3.42 xx170 = 581.4# $\text{g}$