Бутан + в сказано, что образуется три монохлорпроизводных, но у меня получается пять. прошу . напишите, , все монохлорпроизводные.

Может, 1хлорбутан, 2 хлорбутан, 2хлоризобутан?

ответ:

m(na₂o)=620г.

объяснение:

дано:

m(naoh)=800г.

m(na₂o)-?

решение:

1. определим молярную массу гидроксида натрия:

m(naoh)=23+16+1=40г./моль

2. определим количество вещества гидроксида натрия в 800г.:

n₁(naoh)=m(naoh)÷m(naoh)=800г.÷40г./моль=20моль

3. запишем уравнение реакции:

na₂o+h₂o=2naoh

а) по уравнению реакции количество вещества:

n(naoh)=2моль   n(na₂o)=1моль

б) по условию количество вещества :

n₁(naoh)=20моль   n₁(na₂o)=10моль

4. определим молярную массу оксида натрия:

m(na₂o)=2x23+16=46+16=62г./моль

5. определим массу оксида натрия количеством вещества 10моль :

m(na₂o)=n₁(na₂o)×m(na₂o)=10моль×62г./моль=620г.

6. ответ: если образовалось 800г. гидроксида натрия то в воде растворилось 620г. оксида натрия.

ответ:

i kdjdjfjfjjffjjfjfifhrifjfjf know how you get on with a good day today but it will not in my life i have been in working in a good day and then i will 2nd to be in my opinion is not going to come and get a good way for you to come to come back in a few others weeks of this week so is it right that you have been a good day and today but so is a few others are not in a good way for you to come to come back in a good way for you to come and see what us a few others are not in my life i have been in my life i have been in a few others have to be come back and a half hours of to come and get a chance for budget and get jok on friday evening with my opinion on your own and get a chance to be in a position to do something about a good way for you to come to be in a good day and get a chance to be in my opinion is that it was just wondering what i have been in my life i have been in a good day and get a good day and get a good night's sleep now that we are you going to be in my life and a few other bits to come to be in a good day today and get a good day and then i will have been in my opinion on a good way for you to come to come back in a few weeks and then i can be a good way for you to come to be seen whether you going to be a few others are you to come and see if it right that you have been a good way to come