Question

Calculate the number of grams of sodium chloride (NaCl) necessary to prepare 230mL of a 2.00 M aqueous sodium chloride solution. Formula mass of NaCl is 58.5 amu.

Answer 1

Molarity of solution $=2\space M$

Volume $=230\space mL=0.230\space L$

Moles of NaCl $=2\times0.230=0.460\space mol$

Mass of NaCl $=0.460\times58.5=26.91\space g$