What letter represents the enthalpy of reaction?

The rules of engagement (roe) working group is often used to (select all that apply.)

What are the major types of a chemical compound

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?