What is the molarity of 10.0 g of NaCl dissolved in water to make 100. mL?

= 1.7 M

Explanation:

Molecular mass of NaCl = (23+35.5) = 58.5g

58.5g of NaCl are weighed by 1 mole of NaCl

10.0g of NaCl will be weighed by (10:58.5)

= 0.17 moles of NaCl

100mL = (100:1000) L = 0.1L

0.1L of a solution is occupied by 0.17 moles of NaCl

1L of solution will be occupied by [ (1:0.1) * 0.17]

=1.7 M