I got this question as an example question and I have no clue on how to solve part B
Chlorine can be produced by the reaction:
2KMnO4 + 16HCl ->2KCl + 2MnCl2 + 5Cl2 + 8H2O
(a)What mass of KMnO4 is required to produce 2.5 L of Cl2 gas measured at STP?
For part A I got 7.05 g ( 0.044615...