Mr(BaBr2)=137 + 80*2 = 297
W(Ba)= Ar(Ba) *n / Mr(BaBr2) *100% = 137 *1 / 297 *100% =46%
W(Br) = Ar(Br) * n / Mr(BaBr2) *100% = 80*2/297 *100% = 54%
Mr(BaBr2)=137 + 80*2 = 297
W(Ba)= Ar(Ba) *n / Mr(BaBr2) *100% = 137 *1 / 297 *100% =46%
W(Br) = Ar(Br) * n / Mr(BaBr2) *100% = 80*2/297 *100% = 54%