к 150г 55%-го раствора соли прилили 120г воды.Найти массовую долю соли - №28365448

к 150г 55%-го раствора соли прилили 120г воды.Найти массовую долю соли
- Предмет:
  Химия
- Автор:
  huber
- 5 лет назад

Ответы 1

общая масса раствора - 120+150=270масса соли - 0.55*150=82.5массовая доля - (82,5/270)*100%≈30%
- Автор:
  fleming
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

Расставить коэффициенты и указать тип реакции: Fe2O3+AlстрелкаAl2O3+Fe;Na+O2 стрелкаNa2O;NaClстрелкаNa+Cl2
- Предмет:
  Химия
- Автор:
  winstonbmbr
- 5 лет назад
- Ответов:
  
  0
- Смотреть
Найдите значение выражения 0,052a + 48b, если a= 100, b= 0,1
- Предмет:
  Математика
- Автор:
  bambino3mle
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Open the brackets (use Present Simple, Present Progressive, Past Simple, Future Simple.) Make up questions. Bill (to take) part in the competition in 3 days. (When) The concert (to take) place 4 days ago. (When, alt. quest.) He (to play) the violin in his room now. (general quest.) My granny (to work) in the garden every spring. (Who, Why) She (to be) in the kitchen. (Where, tag-quest.) She (to cook) dinner. (What) We (to be) in Moscow last summer. (Who, tag-quest.) Her mother (to be) at the market now. She (to want) to buy some fresh fruit. (What) They (not, to be) here. They (to play) badminton in the yard. (alt. quest.) She (to hate) spiders. (Who, Why) Mike (to buy) a new computer game yesterday. (Who, tag-quest.) Ted (to phone) you next Tuesday. (alt. quest.) I (to listen) to you very attentively but I (not, to understand) anything. He (to learn) all the grammar rules yesterday. (general quest.) He (to know) them well today. (Why) Look! Sam (to ride) a bike without hands. (general quest.) Our relatives usually (to visit) us in summer. (tag-quest., Who) Open the brackets (use Present Simple, Present Progressive, Past Simple, Future Simple.) Make up questions. Bill (to take) part in the competition in 3 days. (When) The concert (to take) place 4 days ago. (When, alt. quest.) He (to play) the violin in his room now. (general quest.) My granny (to work) in the garden every spring. (Who, Why) She (to be) in the kitchen. (Where, tag-quest.) She (to cook) dinner. (What) We (to be) in Moscow last summer. (Who, tag-quest.) Her mother (to be) at the market now. She (to want) to buy some fresh fruit. (What) They (not, to be) here. They (to play) badminton in the yard. (alt. quest.) She (to hate) spiders. (Who, Why) Mike (to buy) a new computer game yesterday. (Who, tag-quest.) Ted (to phone) you next Tuesday. (alt. quest.) I (to listen) to you very attentively but I (not, to understand) anything. He (to learn) all the grammar rules yesterday. (general quest.) He (to know) them well today. (Why) Look! Sam (to ride) a bike without hands. (general quest.) Our relatives usually (to visit) us in summer. (tag-quest., Who)
- Предмет:
  Английский язык
- Автор:
  averybaker
- 5 лет назад
- Ответов:
  
  0
- Смотреть
в 150 г 10% раствора гидроксида калия растворили еще 20 г(koh) рассчиьайте массовую долю щелочи в полученном растворе
- Предмет:
  Химия
- Автор:
  alishaleyq
- 5 лет назад
- Ответов:
  
  0
- Смотреть

How much to ban the user?

1 hour 1 day 100 years