0.300 moles of bromine gas (Br2) and 0.500 moles of chlorine gas (Cl2) react to for tribromochlorine (Br3Cl). how many moles of this product will form ?

Answer 1

A LR problem. See you third post up the list. Also, here is a site that gives specific instructions how to solve a limiting reagent problem.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html