Question

Suppose that 2.50 g of NaCl is required for a certain reaction. If the NaCl is available as a 0.150 molar solution, how many mL of the solution must be used?

Answer 1

Number of moles =$\frac {2.5g} {58.44}=0.04 2.78moles$

$V=\frac {0.04278}{0.15}=0.285L$

V=285mL