What is the molarity of a KF solution containing 2.0 mol of KF in 500mL of solution?
Select one:
0.25 M
4.00 M
12 M
1.00 M

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