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mary320
@mary320
July 2021
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СРОЧНО!!!!!!!!!!!!!!!!!!!!!!!
Помогите,пожайлуста!!!!!!!!!)
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mihalkovadasha
Формула вещ-ва: R2O5
w(O)=74,074% Ar(O)=16 а.е.м.
1) 100%-74,074%=25,926% итак, w(R)=25,926%
2)w(O)=Ar(O)*5/Mr(R2O5);
74,074%=16*5/Mr(R2O5)
Mr(R2O5)=80/74,074=1,08
3)w(R)=Ar(R)*2/Mr(R2O5)
25,926%=Ar(R)*2/1,08
Ar(R)*2=25,926*1,08
Ar(R)*2=28
Ar(R)=14 а.е.м. R=N-азот ОТВЕТ: N2O5
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Answers & Comments
w(O)=74,074% Ar(O)=16 а.е.м.
1) 100%-74,074%=25,926% итак, w(R)=25,926%
2)w(O)=Ar(O)*5/Mr(R2O5);
74,074%=16*5/Mr(R2O5)
Mr(R2O5)=80/74,074=1,08
3)w(R)=Ar(R)*2/Mr(R2O5)
25,926%=Ar(R)*2/1,08
Ar(R)*2=25,926*1,08
Ar(R)*2=28
Ar(R)=14 а.е.м. R=N-азот ОТВЕТ: N2O5