A sample of 6.81 moles of cesium fluoride is reacted with 8.23 moles of xenon hexafluoride to produce
cesium xenon heptafluoride. Using the balanced
equation below, predict which is the limiting reactant
and the maximum amount in moles of cesium xenon
heptafluoride that can be produced.
CSF + XeF6 → CsXeF7

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o