Предмет: Химия, автор: sheikinarita

к 1 л 10% раствора h2so4 (р=1,066 г/мл)добавили 50 г koh.Какова среда полученного раствора

Ответы

Автор ответа: KrisRay86

кислая
KOH г/экв = 50/KOH = 0.8911
H2SO4 г/экв = 2*1000*1.066*0.1/H2SO4 = 2.1738

Похожие вопросы

Предмет: Математика, автор: anna10042010g

140Б. Задайте друг другу вопросы по тексту, используя в
них данные в таблице слова. С опорой на вопросы и ответы
определите основную мысль текста.
Слова
Вопросы
Удобный, экологически чистый
Водитель
Самокат, скутер

помогите пожалуйста!!!!

6 лет назад

Предмет: Русский язык, автор: salimzhanalina

ПОМОГИТЕЕЕЕ СРОЧНОООО

6 лет назад

Предмет: Английский язык, автор: Аноним

Put the adjectives in two forms
short - ... -...
expensive - ... -...
small- ... - ...
long -... - ...
beautiful -... -...
good - ... -...
little -...- ...
interesting -... -...
bad - ... - ...
bright - ... - ...
Complete the sentences with the correct form of the adjectives
1. Helen is eleven years old. She is ... (old) than me.
2. Helen is the... (responsible) student in our class.
3. She is very sociable and has a lot of friends at school. Helen is one of the... (bright) students in her class.
4. On Monday she had a Maths test. During her test she did the first and the second tasks very ... (quickly).
5. But she couldn't do the third task, which was the ... (difficult).
6. Helen was ready to start crying. Suddenly she looked at her friend, Martin. He showed her a picture with a ... (funny) smiley.
7. Helen smiled and did the task. Martin was her ... (good) friend and he helped her.
Watch the video and tick the days of the week
Science Monday Tuesday Wednesday Thursday Friday
English Monday Tuesday Wednesday Thursday Friday
Maths Monday Tuesday Wednesday Thursday Friday
Read the text and find out if the following sentences are true or false. Определи, является ли предложение правда (Т) или ложь (F)
In most British schools students wear a school uniform. Girls usually wear a white blouse with a dark skirt and a pullover. Boys wear a shirt and a tie, dark trousers and a pullover. The colours of the pullover may be grey, brown, blue or green. Boys often wear school caps and girls sometimes wear hats. Shoes are usually black or brown. Children of ten and eleven don’t often like their school uniform, especially the hats and shoes. Sometimes they do not wear the correct uniform. Schools often give them a warning the first time this happens. But the second time they are punished if they don’t wear the correct form.
1. Children don't have uniform in British schools. T/F
2. Girls usually wear blouses and skirts. T/F
3. Boys wear T-shirts and jeans.
4. School uniform in Britain is green, grey, blue and brown. T/F
5. Schoolchildren like their hats and shoes. T/F

пожалуйста помогите я по болезни протустила

6 лет назад

Предмет: Математика, автор: Linel

Есть коробка длина 7 см. ширина 5см. высота 3 см. поместятся ли в этой коробке 144 бусины, если каждые четыре бусины занимают один кубический сантиметр?
Ответ нужен с решением, развёрнутый.

10 лет назад

Предмет: Физика, автор: Обращайка

Самолёт прошёл взлётную полосу за 20с и в момент отрыва от земли имел скорость 120 м/с. С каким усорение он двигался по взлётной полосе и какова её длина?

10 лет назад