Theme Transition
9. Milk of magnesla Is an antacid used to settle sour stomachs.
The formula for one molecule of milk of magnesla is shown
below.
Mg(OH),
How many atoms in all are in a molecule of milk of magnesla?

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.