a) N:O=2:5
b) mN:mO=28:80=7:20
c) mN2O5=2*14u+5*16u=108u
d) 28u---x%
108u---100%
x=25,93%N
100%-25,93%=74,07%O
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a) N:O=2:5
b) mN:mO=28:80=7:20
c) mN2O5=2*14u+5*16u=108u
d) 28u---x%
108u---100%
x=25,93%N
100%-25,93%=74,07%O