Предмет: Другие предметы, автор: ermuhascha08

КАК ОПРЕДЕЛЯТЬ МАССОВУЮ ДОЛЮ ЕШЕСТВ В РАСТВОРЕ?С обьяснением.​

Ответы

Автор ответа: aidlove25
1
например в H2O тебе надо найти массовую долю O. То есть сколько процентов (О) содержится в воде.

Делаешь как в математике:

М(O)/M(H2O)*100%
где (М)—считаешь по таблице Менделеева в начале учебника.


Автор ответа: uwu97
0

Ответ:

массовая доля это величина, равная отношению массы растворённого вещества к массе раствора

ее формула w(в-ва)=m(в-ва)/М(раствора) •100%

где w-омега, м-масса, М- молекулярная масса, в-ва- вещество

а чтоб найти М раствора надо массу в таблице Менделеева вва которого ты ищешь умножить на то сколько его (циферку рядом, как на пример H²O= масса Н- 1, а его в реакций две значит:1•2+16, 16-это масса кислирода, если бы у О была бы циферка рядом надо было бы не умножить на нее)


uwu97: и ещё есть ты не понял/а то есть на Ютубе специальные каналы на эту тему, там если поискать можно найти хорошие
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