55. (в4-128-25) В процессе хлорирования воды Гцелью очистки для удаления
лишнего хлора обычно используется
сульфит натрия. Составив уравнение
реакции, вычислите, сколько граммов
Na2SO3-7Н2О требуется для 0,3 г хлора.
А) 0,71 В) 1,06 C) 1,26 D) 3,55
E) 2,52​

Sugar is dissolved in water. which is the solute? sugar neither both water

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

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, .)