When a gas is heated to 130 °C, its volume changes from 250 mL to 375 mL. What was the temperature of the gas before it was heated?

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.