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. some
2. a, some
3. a, some
4. some
5. some
6. some
7. a
8. some
Peter:Hello.My name is Peter.What*s your name?
Jane:My name is Jane.Nice to meet you.
P:It*s apleasure.This is agreat party!
J:Yes it is.Where are you from?
P:I*m from Amsterdam.
J:Amsterdam?Really,are you German?
P:No ,I*m not german.I*m Dutch.sorry about that.
J:That*s ok.
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