1. Balanced Chemical Equation:

The balanced chemical equation for the reaction between lithium hydroxide (LiOH) and carbon dioxide (CO2) is:

2 LiOH + CO2 → Li2CO3 + H2O

2. Mole Ratio:

From the balanced equation, we see that 2 moles of LiOH react with 1 mole of CO2.

3. Calculation:

* We have 20 moles of CO2.

* To find the moles of LiOH needed, we use the mole ratio: (2 moles LiOH / 1 mole CO2)

* Multiply the moles of CO2 by the mole ratio: 20 moles CO2 * (2 moles LiOH / 1 mole CO2) = 40 moles LiOH

Answer: 40 moles of lithium hydroxide are required to react with 20 moles of carbon dioxide.