M(AL2O3)= 27×2 +16×3=102
u(Al)=m(Al)/M(AL2O3)=54/102×100%=52,94%
Объяснение:
Mr(Al2O3) = 27*2 + 16*3 =102
W(Al) = Ar(Al) *n / Mr(Al2O3) *100% = 27*2 / 102 *100% =53%
M(AL2O3)= 27×2 +16×3=102
u(Al)=m(Al)/M(AL2O3)=54/102×100%=52,94%
Объяснение:
Mr(Al2O3) = 27*2 + 16*3 =102
W(Al) = Ar(Al) *n / Mr(Al2O3) *100% = 27*2 / 102 *100% =53%