 Let's do this one. So it says write the reaction quotient from the balanced equation But it doesn't give us a balanced chemical equation for the combustion of propane gas So we're going to have to balance this equation. So we've got Three here carbons. So three carbons there eight Hydrogens two times four is eight Three times two is six plus four is ten divided by two is going to be five Okay, so that's how you balance that reaction So now since we have the balanced chemical equation we can write out the reaction quotient, okay? This C refers to concentration because we're doing it in concentration So can you guys help me or do you want me to do this by myself? So it would be concentration of CO2 to the third power Very good Times the concentration of H2O to the fourth power Very good Over the concentration of the C3HA just to the one power Okay, and you don't put it, it's implied, okay? And then O2 to the fifth power Very good Okay Oh I heard the three Okay Okay Everybody okay with that one? Any questions on that? Except for why I wrote the three