It seems you're providing responses to a series of questions, possibly related to a chemistry topic involving stoichiometry and gas reacting equations. Given the context, it appears that you might be working with the combustion of propane (C3H8) and considering the stoichiometric relationships between reactants and products.
Question 11
The chemical reaction for the combustion of propane is typically written as follows:
\[ \text{C}_3\text{H}_8 + 5 \text{O}_2 \rightarrow 3 \text{CO}_2 + 4 \text{H}_2\text{O} \]
From this reaction, we can derive the following stoichiometric relationships:
- For every 1 mole of propane (C₃H₈) that reacts, 5 moles of oxygen (O₂) are consumed and 3 moles of carbon dioxide (CO₂) and 4 moles of water (H₂O) are produced.
Based on your selected responses, here’s how they fit with the stoichiometric ratios:
- For every 4 moles of water produced, 3 moles of propane react. (This is true, as 4 moles of water comes from 1 mole of propane.)
- For each mole of oxygen that reacts, 3 moles of carbon dioxide are produced. (This is not true; for every 5 moles of oxygen, 3 moles of carbon dioxide are produced.)
- For each mole of propane that reacts, 5 moles of oxygen are produced. (This is incorrectly stated; it should say consumed.)
- For every 3 moles of carbon dioxide produced, 5 moles of oxygen react. (This is true based on the reaction.)
Question 12
The choices of numerical answers provided (24, 96, 48, 16) seem to indicate a request for a quantitative value related to the stoichiometry.
If these numbers pertain to amount in moles or mass, please clarify the question so that I can provide a more accurate response or calculation. If it's based on the combustion reaction or another related calculation, please provide further context (e.g., given data or what you're solving for).