PLEASE HELPP! The proposed mechanism for a reaction is:
Step 1: A + B X (fast)
Step 2: X + C → Y (slow)
Step 3: Y → D (fast)
Which rate law is consistent with this mechanism?

What mass of iron must be in a hot pack to provide -335kj of heat when the iron reacts with oxygen and is converted to iron (111) oxide according to the following thermochemical equation? 2fe(s) + 1.5o2(g)—> fe2o3(s) delta h= -824.2kj/mol