Массовая доля соли в растворе, полученном при сливании 100 г 5% раствора с 300 г 15% раствора

в доме 78 жильцов а в соседнем на 22жильца больше сколько жильцов в соседнем доме

найди число 20% которого равны : 60, 120, 333

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She tried to find her husband,but everyone seemed to be wearing white parkas and red caps.At last she saw a pair of stuck in the snow with a red cap on them.She could see the letters P.P on the cap."That must behis cap," thought Mrs. Pepperpot."Those are his initials, Peter Pepperpot. I will jast put the wax in the cap,then he will find it when he comes back."

Nobody knows what influenced Mrs. Pepperpot but she suddenly got very small and it was she who fell into the cap/ "No harm done," thought Mrs. Pepperpot. "When Peter comes, he wll see me  in his cap. Then he can put me down somewhere out of the way of the race. And as soon I grow large again I can go home".

Составьте уравнение реакции, отражающих химические свойства фосфорной кислоты.