You are conducting an experiment determining the rate of diffusion. Substance A has a molecular weight of 57 grams/mole and substance B has a molecular weight of 123 grams/mole. Which substance will diffuse faster through gelatin in a petri dish

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.