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EternallySadFox
@EternallySadFox
August 2021
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12
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1. определите число молекул содержащихся в 12 г Са (ОН)2
2. Найдите массовую долю углерода в ВеС2О4*10Н2О
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ndambaeva
1. nCa(OH)2=m/M=12g/74g/mol=0.16mol
N=n*Na=0.16*6*10(23)=0.96*10(23)
2. M(BeC2O4*10H2O)=97+180=277g/mol
wC=24g/277g/mol*100%=8.6%
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Answers & Comments
N=n*Na=0.16*6*10(23)=0.96*10(23)
2. M(BeC2O4*10H2O)=97+180=277g/mol
wC=24g/277g/mol*100%=8.6%