Watch this video about Emily and Ana and fill in the gaps. (Посмотри видео про Эмили и Ану и заполни пропуски.) 1. We are going some friends and eat out on Friday evening. 2. The weather is going and warm. 3. I'm to read a book and relax.
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
1. We are going to see some friends and eat out on Friday evening. 2. The weather is going to be sunny and warm. 3. I'm going to read a book and relax.
brother. 7. the pupil? were discussing a story. 8. the man was passing the theatre when the clock struck ten. 9. it was snowing when w# went out. 10. the boy was running very fast.
headfirst down a sand. 6.because that is how fast you can expect (go). 7.you dont need (have) any experience