433.8267 g/mol according to Chemical aid
Explanation:
Medieval number one. There you havt it.
.5 mol of A will be left over since 1.5 mol of A will be used for every 3 mol of B due to the 2:1 ratio established by the formula.
HCl is the limiting reactant, and 3.5 mol H2<span> can be formed</span>