Question

what is the mass of 0.3 mol of kmno4?
molar mass kmno4 = 158.04 g/mol
0.3 mol kmno4 = ? g kmno4

Explanation:

Step1: Recall mass - mole relationship

$m = n\times M$ (where $m$ is mass, $n$ is amount in moles, $M$ is molar mass)

Step2: Substitute given values

$n = 0.3\ mol$, $M=158.04\ g/mol$, so $m=0.3\ mol\times158.04\ g/mol$

Step3: Calculate the mass

$m = 47.412\ g$

Answer:

$47.412$