•If the
ratio isn’t obvious, divide mol of each substance by the smallest number…(See Page 178)
•e.g.
what if the ratio ends up being something weird like 0.195 Fe:0.291
O ???
•0.195
/ 0.195 = 1
•0.291
/ 0.195 = 1.5
•This
is a 1:1.5 ratio which is really 2:3
•therefore Fe2O3