Какую массу соли необходимо взять для приготовления 50 г 0,5 % - го раствора. - №31733960

Какую массу соли необходимо взять для приготовления 50 г 0,5 % - го раствора.
- Предмет:
  Химия
- Автор:
  slade
- 5 лет назад

Ответы 1

50-0.25=49.75г решение
- Автор:
  carey
- 5 лет назад
- 0
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Найдите значения выражений |а| + |b| и |а + b|,если 1)а=-3, b= -7.
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Каким должны быть числа а и b, чтобы выполнялись равенство. |а+b| = |a| + |b|?
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Пожалуйста переведите!
Задание: Read and translate the text. Give your own written comment on the following: «Is it really beneficial to be the only child in a family»? (15 sentences).

◙ One-child households have doubled over the last two decades making it one of the fastest growing family units in most European countries. But is it really beneficial to be an only child in a family?

◙ On the one hand, if you are an only child, you don’t have to share your room with anybody else. As a result, these children may have friends to stay over on a regular basis. Besides, they have more privacy and no one disturbs them while they are studying. What is more, parents give all their love and care to their only child. Such children also benefit from having the family financial resources focused upon them.

◙ On the other hand, if you have a sibling, you have someone to play with or to talk to, and you’ll never feel bored or lonely. And if you get into trouble, you have someone to give you a helping hand or at least some advice. Moreover, children in large families are usually not overindulged by their parents. Kids learn at the very early age that the world doesn’t revolve around them and that they have to share their possessions or wait for their turn.

◙ In conclusion, I want to say that one child families have their pros and cons. Personally, I believe that having a brother or a sister is an amazing feeling, because no matter what happens in life, you will not be lonely.
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Вычесли 300-(100+100)=? 800-(400-300)=?
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