To determine how many grams of potassium oxide (K₂O) will be produced, you can start by using the Law of Conservation of Mass, which states that mass is neither created nor destroyed in a chemical reaction.
-
First, we need to calculate the total mass of reactants:
- Mass of potassium (K) = 2 grams
- Mass of oxygen (O) = 5 grams
- Total mass of reactants = 2 grams + 5 grams = 7 grams
-
According to the Law of Conservation of Mass, the total mass of the products must equal the total mass of the reactants. Therefore, the mass of potassium oxide (K₂O) produced will also be 7 grams.
Given the choices, the correct response is 7 grams.