July 2022 1 29 Report

1.Определить в каком веществе массовая доля кислорода выше:

А) СО или SO

B) HCrO4 или H2SO4

Составить схему решений.

2.Определить массовую долю водорода в следующих соединениях:

А) NH3

B) Ca(OH)2

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