What mass of salt (NaCl)
should you add to 2.00 L
of water in an ice-cream maker to make a solution that freezes at -13.8 ∘C
? Assume complete dissociation of the NaCl
and a density of 1.00 g/mL
for water and use Kf=1.86∘C/m
.
Express your answer in grams to three significant figures.