Question

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

Explanation:

Step1: Recall the formula for moles

The formula for calculating the number of moles ($n$) is $n=\frac{m}{M}$, where $m$ is the mass and $M$ is the molar mass.

Step2: Substitute the given values

Given $m = 458\ g$ and $M=239.27\ g/mol$. Then $n=\frac{458}{239.27}$.

Step3: Calculate the value

$n=\frac{458}{239.27}\approx1.91$

Answer:

$1.91$