how many moles of pbs are equivalent to 458 g pbs? molar mass pbs = 239.27 g/mol

Answer:

$1.91$

Explanation:

Step1: Recall mole - mass formula

$n=\frac{m}{M}$ where $n$ is number of moles, $m$ is mass and $M$ is molar mass.

Step2: Substitute given values

$n=\frac{458\ g}{239.27\ g/mol}$

Step3: Calculate the result

$n = 1.91\ mol$