If we convert 1.0mg NaCl to “moles NaCl,” we can use the “0.14 moles / L” to get ourselves into units of liters (volume):
(1.0mg NaCl / 1) (1g NaCl / 1000mg NaCl) (1mol NaCl / 58.45g NaCl) = 1.7 x 10^–5 moles NaCl
(1.7 x 10^–5 mol NaCl ...