How do I do these types of problems?? 1) what is M?
2) what is Q?
3) what is J?
4) what is C?
5) what is L?

We just started a new lesson in chemistry and everyone hates it and i dont get it one bit. i hate school. h el p.balanced equationc3h8+5o2-> 3co2+4h2o1.) if you start with 14.8g of propane(c3h8) and 3.44g of oxygen, which is the limiting reactant -check my answer 2.)what mass of excess reagent is left over? 3.)what mass of carbon dioxide can be made? 4.)what mass of water is produced?

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

How does the motion of particles in a gas change as the gas cools