n(N2)=20/22.4=0.89
N(N2) = 0.89 *6*10^23 =5.34 *10^23 молекул
M(N2)=28г
28*0.89=24.92г
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n(N2)=20/22.4=0.89
N(N2) = 0.89 *6*10^23 =5.34 *10^23 молекул
M(N2)=28г
28*0.89=24.92г