August 2021 0 5 Report
ПОМОГИТЕ СРОЧНО!!! Зная соотношения элементов в соединении, составьте его формулу:
(a) фосфор : кислород = 2 : 5
(b) кальций : хлор = 1 : 2
(с) медь : кислород = 2 : 1
(d) алюминий : сера = 2 : 3
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