if you have one mole of CH3CH3(g) + 2 moles of Cl2 (g) and form one mole of C2H4Cl2 (l) + 2 moles of HCl (g)

Question

assuming a 90% yield calculate the amount of each reactant needed to form 1.5 kg of product

Answer 1

Here is a problem I worked in detail in stoichiometry. It isn't the same problem but the process is the same.
http://www.jiskha.com/science/chemistry/stoichiometry.html