Calculate the mass present in 0.75 mole of sodium chloride?

$\text{44 g}$
$\text{no. of moles" xx "molar mass" = "grams (or mass)}$
The molar mass of sodium chloride is $\text{58.4 g/mol}$, so
$\text{0.75 mol" xx "58.4 g/mol" = "44 g}$