Propane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). If you mix propane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 300 mm Hg, what are the partial pressures of propane and oxygen? If the temperature and volume do not change, what is the pressure of the water vapor after reaction?

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

Definition: this is the weighted average of all of the isotopes of an element.