The maximum contaminant level (mcl) set by the epa of cadmium in drinking water is 0.0050 mg/l . convert the mcl of cadmium from milligrams per liter to parts per billion (ppb).

15) a substance used in manufacturing gasoline consists of finely divided platinum supported on an inert solid. suppose that the platinum is formed by the high temperature reaction between platinum (iv) oxide and hydrogen gas. the other product is water. a) write and balance the equation b) how many grams of hydrogen are needed to produce 1.0 g of platinum metal? c) how many moles of water are produced at the same time? how many grams? ( show work, .)