1)saw
2)got/went
3)saw/broke/stopped
4)lent/promissed
5)intended
6)ate/knew
7)opened/unlocked
8)opened/found/drunk
9)ate
10)started
M(N):m(оксида)=63,6:100
m(N):m(O)=63,6:36,4
это по массе, а нам надо перейти к количеству n(N):n(O)=63,6/14:36,4/16
4,5:2,275=2:1
N2O
1. Today the dinner is being cooked in time.
2. Yesterday breakfast wasn't cooked in time
3. The article will be written to Monday.
4. Plans can be changed.
5. I must have been come to Paris.
6. This book should be trandslated.
На, тут усе просто, вроде)