Предмет: Химия, автор: Rozik21

какая масса соли образуется при взаимодействии 0,5 моль натрия с 100г аминопропионовой кислоты

Ответы

Автор ответа: ЛиНоЧкA

1.молярная масса кислоты 89г/моль , молярная масса соли 111г/мол
2.опред.число моль кислоты 44,5г /89г/моль=0,5моль
3.число моль кислоты и соли по уравнению равные, значит соли тоже 0,5 моль , что в массе составляет 0,5моль*111г/моль=55,5г
4. массовая доля выхода соли составляет 50г*100%/55,5г=90%
УДАЧИ!

Либо 3 моль

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To call for a pilot, the ship either sends a radiogram beforehand or hoists the signal when she approaches the pilot station or, which is common nowadays, the Master contacts the pilot station by radiotelephone. A pilot may board the ship either near the pilot station or in the offing.
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