Предмет: Химия, автор: lerakobylko

У продаж надходять оцтова есенція - водний розчин з масовою часткою кислоти 80% і столовий оцет – водний розчин з масовою часткою оцтової кислоти 9%. Обчисліть масу СН3СООН і води в оцтовій есенції і столовому оцті масою 250г.

Ответы

Автор ответа: nikolaygr

m1(оцту)=250*80/100=200г

m(H2O)=250-200=50г

m2(оцту)==250*9/100=22,5г

m(H2O)=250-22,5=227,5г

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