Ответ:
Mr(CaCl₂) = 40 + 2 × 35,5 = 111
ω(Ca) = 40/111 × 100% = 36,04%
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Ответ:
Mr(CaCl₂) = 40 + 2 × 35,5 = 111
ω(Ca) = 40/111 × 100% = 36,04%