Ответы 1
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Дано: N=m/M*Nam(H2CO4)=50г M(H2CO4)=1*2+12+16*4=78г/мольNa=6*10^23 N(H2CO4)= 50г / 78г/моль * 6*10^23=4*10^23______________ Ответ: N(H2CO4)= 4*10^23 молекулN(H2CO4)-?
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Автор:
amirah - 6 лет назад
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