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olgaolga200064602
@olgaolga200064602
July 2022
1
9
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задача
дано: Са(Он)2
найти:
w(о)-?
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Verified answer
Дано:Ca(OH)2
Найти
: w(O)
Решение:
w(э)= Ar(э) ∙ n(э)\Mr(в-ва)
Mr(Ca(OH)2) = 40 + 16 ∙2 + 1∙2= 74
w(O) = 16 ∙ 2\74 = 0,43 или 43%
Ответ: w(O) = 43%
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Answers & Comments
Verified answer
Дано:Ca(OH)2Найти: w(O)
Решение:w(э)= Ar(э) ∙ n(э)\Mr(в-ва)
Mr(Ca(OH)2) = 40 + 16 ∙2 + 1∙2= 74
w(O) = 16 ∙ 2\74 = 0,43 или 43%
Ответ: w(O) = 43%