Question

The molality equation also requires the moles of solute. The molarity describes 3.000 moles of NaCl per 1 L of solution. Use the moles of NaCl to solve for the mass of NaCl. Note: use the molar mass of NaCl rounded to 4 significant figures.

Answer 1

Answer : The mass of NaCl will be, 175.5 grams

Explanation : Given,

Moles of $NaCl$ = 3.000 mol

Volume of solution = 1 L

Molar mass of $NaCl$ = 58.5 g/mole

Formula used :

$\text{Mass of }NaCl=\text{Moles of }NaCl\times \text{Molar mass of }NaCl$

$\text{Mass of }NaCl=3.000mol\times 58.5g/mol$

$\text{Mass of }NaCl=175.5g$

Thus, the mass of NaCl will be, 175.5 grams