How many moles of HCI will react with 4.93 mol of MnO2?

The balanced equation for the reaction between HCl and MnO2 is:

4 HCl + MnO2 -> MnCl2 + 2 H2O + Cl2

From the balanced equation, we can see that the stoichiometric ratio between HCl and MnO2 is 4:1. This means that for every 4 moles of HCl, 1 mole of MnO2 will react.

Given that you have 4.93 moles of MnO2, to find out how many moles of HCl will react, you can use the stoichiometric ratio:

(4.93 mol MnO2) * (4 mol HCl / 1 mol MnO2) = 19.72 mol HCl

Therefore, 19.72 moles of HCl will react with 4.93 moles of MnO2.