What is the molarity of a solution containing 5 moles of NaCl dissolved in 10 liters of water? .5 mol/L
2 mol/L
.2mol/L
.5mol/L

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.