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peplogrivkakw
@peplogrivkakw
July 2022
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Вычислите массовую долю NaOH и K2Co
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Дашунька203
Дано:
NaOH
-----------
W(Na) - ?
W(O) - ?
W(H) - ?
-------------
Решение:
W =
Mr(NaOH) = 23+16+1=40
W(Na) =
* 100% = 57,5%
W(O) =
Mr(К2Со) = 39*2+59 = 137
W(К) =
* 100% = 57%
W(Со) = [tex] \frac{59}{137} [/tex
] * 100% = 43%
---------------------------
Ответ:
W(К) = 57%
W(Со) = 43%
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Answers & Comments
NaOH
-----------
W(Na) - ?
W(O) - ?
W(H) - ?
-------------
Решение:
W =
Mr(NaOH) = 23+16+1=40
W(Na) = * 100% = 57,5%
W(O) =
Mr(К2Со) = 39*2+59 = 137
W(К) = * 100% = 57%
W(Со) = [tex] \frac{59}{137} [/tex] * 100% = 43%
---------------------------
Ответ:
W(К) = 57%
W(Со) = 43%