Предмет: Окружающий мир, автор: 99824

10 вопросов 10 ответов Среда кислая щелочная и нейтральная

Ответы

Автор ответа: papasha22872

Ответ:

Кислая среда — среда, в которой концентрация ионов водорода больше концентрации гидроксид-ионов (рН < 7). Щелочная среда — среда, в которой концентрация ионов водорода меньше концентрации гидроксид-ионов. (рН > 7). При значениях водородного показателя рН: от 0 до 3 среда водного раствора считается сильнокислой, от 4 до 6 — слабокислой, 7 — нейтральной, от 8 до 10

Объяснение:

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Аноним

ПОМОГИТЕ ПОЖАЛУЙСТА! СОСТАВИТЬ ПО ТЕКСТУ 10 ВОПРОСОВ НА АНГЛИЙСКОМ ЯЗЫКЕ! НА АНГЛИЙСКОМ! НЕ НА РУССКОМ! ОТМЕЧУ , КАК ЛУЧШИЙ) ТОЛЬКО НЕ
СИЛЬНО СЛОЖНЫЕ, ДЛЯ 7-ЫХ КЛАССОВ

People have various attitudes to fashion.Some are indifferent and not care what they wear. Others,mostly women, are very choosy about what clothes to wear and like to spend a lot of money on them. Most people buy ready-made clothes at clothes shops or second-hand shops, but there are those who like to have their clothes mabe at the tailor's. There are some people who dress to the latest fashion even if it does not suit them. It seems to be their hobby to follow the fashion magazines and see what leading designers present.

Fashion concerns not only clothes, but also hair style, make-up and accessories, such as
shoes, handbags, gloves, belts, hats, scarfs or jewellery and glasses. Styles, cuts, designs and particularly the length of clothes change very quickly because
dressmaking has become a big business nowadays. Fashions often revert to order styles; what is out of fashion, funny or ridiculous now, may look romantic a few decades later.

The way we dress also depends on our taste, on the season and the proper occasion. In summer we usually wear light summer dresses, shorts or Bermuda shorts and various T-shirts. The usual summer footwear is sandals and flip-flops.

In winter people wear something warm-trousers, jeans, cardigans and jumpers. People also wear anoraks, winter coats and jackets, sometimes even fur coats outside.

On special occasions people usually dress up. When going to a concert or to the theatre, evening dresses and suits are appropriate. For sports people put on sportswear. such as sports trousers, jeans, shorts, T-shirts and trainers.

The most popular types of clothes with teenagers are jeans or trousers, shirts and T-shirts of different colours, sweat-shirts or pullovers and trainers. Boots and shoes of the "Converse" shoe company are very popular with the young people now.

As for me, my favorite articles of clothes are jeans, T-shirts and trainers. At my school pupils must wear a uniform, so I don't have a problem with what to put on when I go to school. When I go out, I prefer something comfortable like jeans and a sweatshirt. I try to follow the fashion, but fashionable clothes are rather expensive and since I haven't got a job yet, I have to ask my parents for pocket money. I usually buy clothes at a market and choose clothes similar to the ones that are in fashion at the moment. This saves money!

1 год назад

Предмет: Окружающий мир, автор: Аноним

помогите пожалуйста с номером 41 и с номером 42

1 год назад

Предмет: Қазақ тiлi, автор: Грамотей77

слово лагер септеу на казахском языке!Срочно!!!