ну я знаю , но сомневаюсь
caco3 = cao + co2 мr(caco3)= 40+12+16*3=100
n(caco3) = 1000\ 100= 10 моль
1моль/1моль=хмоль/1моль , где х= n(сao) м(cao)=1моль* 56г/моль= 56г
1моль/1моль=yмоль/1моль , где y= n(сo2) v(co2)= 22,4дм3/моль *1 моль= 22,4 дм3
ответ: м(cao)=56г, v(co2)= 22,4 дм3
The first month of summer I usually spend in the camp. Where we communicate, participate in contests and having a good time. This year I will not be able to get to the camp, because we are going with the whole family until August to relatives in the village.
Until this summer we went to visit him only twice, but I hope to have a good time in the village. Close to home, our relatives has a great lake, where the local youth. The boys play badminton and volleyball, swim and sunbathe. It is always fun, so I'm not too upset that the camp this year is canceled.
The second half of the summer I will be very busy. First, my friends and I agreed to go camping overnight. We plan to spend in the woods for a week. Of course, we will go to the elders and the father of one of the boys, but we are still happy upcoming event. I like to go Hiking, because these events are steeped in an atmosphere of freedom and joy.
In late summer we will go for a week to the sea. There is always nice and warm. We sunbathe, play volleyball together and buried in the sand. However, most of all I like the local streets that wander without end. It's so nice to go – and it's fun reminds me of walking through a huge maze.
I very much look forward to the onset of summer. Just afraid that will not have time to do everything planned. I hope that this summer will be as amazing and magical as the rest.
(sing) this song all evening long yesterday. bill (decorate) his room now. you (cook) tomorrow.