What is the molarity of the solution produced when 8.0g NaOH is dissolved in sufficient water to prepare 500.mL of solution?

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?

Which best describes how johannes kepler developed his laws of planetary motion

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure