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KISAAA20
@KISAAA20
August 2021
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Вычислите массовую долю каждого элемента в соединении CaSO4.
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КSаNа
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Массовая доля элемента вычисляется по формуле w(Э) = (Ar(Э) * n / Mr ) * 100%
Mr( CaSO4) = 40+ 32 + 16*4= 136
w(Ca) = 40 / 136 * 100% = 29,41%
w(S) = 32/ 136 *100% = 23,53%
w(O) = 16*4 / 136 = 47,06%
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Answers & Comments
Verified answer
Массовая доля элемента вычисляется по формуле w(Э) = (Ar(Э) * n / Mr ) * 100%Mr( CaSO4) = 40+ 32 + 16*4= 136
w(Ca) = 40 / 136 * 100% = 29,41%
w(S) = 32/ 136 *100% = 23,53%
w(O) = 16*4 / 136 = 47,06%