Question

Срочно!!!!!!45 фото
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Answer 1

Ответ:

Объяснение:

M(Cr2(SO3)3 = 52 * 2 + ( 32 + 16 * 3)* 3 = 344

w(Cr) = 52 * 2/ 344 * 100% = 30%

w(S) = 32 * 3/344 * 100% = 28%

w(O) = 16 * 9/344 * 100% = 42%

Cr - 30%

S   - 28%

О  - 42%