How are proteins, carbohydrates, and fats related to the discipline of chemistry

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?

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.

Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid