# You are carrying a 1.3 gallon jug full of cold water. Given that the water has a density of 1.0 grams per milliliter, and one gallon is equal to 3.8 liters, what is the mass of the water in kilograms?

You have $1.3 \cdot {\text{gallon"xx3.8*L*"gallon}}^{-} 1$ so..............
$1.3 \cdot {\cancel{\text{gallon"xx3.8*L*cancel"gallon}}}^{-} 1 \cong 5 \cdot L$................
And since $1 \cdot L \equiv 1 \cdot k g$, you have approx. a $5 \cdot k g$ mass of water.