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MAXiMForesT33
@MAXiMForesT33
July 2022
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Массовая доля натрия в карбонате натрия равна
1) 11,1% 2) 24,4% 3) 33,3% 4) 43,4%
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Answers & Comments
efezar
Mr(Na2CO3) = 2*23+12+16*3= 106
ω(Na)=m(Na)/m(Na2CO3) = 46/106=0.434 или 43,4%
Ответ: 4) 43,4%
2 votes
Thanks 7
mrvladimir2
Verified answer
Na2Co3
W(na)=46\106*100=43,3
Ответ:4
5 votes
Thanks 11
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Answers & Comments
ω(Na)=m(Na)/m(Na2CO3) = 46/106=0.434 или 43,4%
Ответ: 4) 43,4%
Verified answer
Na2Co3W(na)=46\106*100=43,3
Ответ:4