what is the mass of 4.54 moles of na2so4? molar mass na2so4 = 142.04 g/mol ? g na2so4

Explanation:

Step1: Recall mass - mole relationship

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

Step2: Substitute given values

$n = 4.54\ mol$ and $M=142.04\ g/mol$, so $m=4.54\times142.04$.

Step3: Calculate the mass

$m = 4.54\times142.04=644.8616\ g$.

Answer:

$644.8616$