Problem- Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq), as described by the chemical equation
MnO2(s) + 4HCl(aq) --> MnCl2(aq) + 2H2O(l) + Cl2(g)
How much MnO2(s) should be added to excess HCl(aq) to obtain 275 mL of Cl2(g) at 25 °C and 715 Torr?
Solve the above problem and provide steps with explanation