1. The problem statement, all variables and given/known data Moon rock contains 0.10 g of water in every 100 g of moon rock. What mass of moon rock, in pounds, would a moon base have to process to recover 1.0 L of water? 2. Relevant equations Density of water is 1.0 g/mL 3. The attempt at a solution I tried to convert the grams into pounds but that got me nowhere.