Mr(Al(NO3)3)=27+3*14+16*9=213г/моль
ω(Al)=27/213*100%=12.68%
ω(N)=14*3/213*100%=19.72%
ω(O)=16*9/213*100%=67.6%
w(Al) = 12.7%; w(N) = 19.7%; w(O) = 67.6%
Объяснение:
w(Al) = Ar(Al) /Mr(Al(NO3)3) = 27/213 = 0.127;
w(N) = Ar(N) /Mr(Al(NO3)3) = 14*3/213 = 0.197;
w(O) = Ar(O) /Mr(Al(NO3)3) = 16 *9/213 = 0.676.
Mr(Al(NO3)3)=27+3*14+16*9=213г/моль
ω(Al)=27/213*100%=12.68%
ω(N)=14*3/213*100%=19.72%
ω(O)=16*9/213*100%=67.6%
w(Al) = 12.7%; w(N) = 19.7%; w(O) = 67.6%
Объяснение:
w(Al) = Ar(Al) /Mr(Al(NO3)3) = 27/213 = 0.127;
w(N) = Ar(N) /Mr(Al(NO3)3) = 14*3/213 = 0.197;
w(O) = Ar(O) /Mr(Al(NO3)3) = 16 *9/213 = 0.676.