Suppose a chemical reaction generated a 50% nitrogen/50% oxygen (by volume) mixture of gas that had a total volume of 22.4 liters at stp. how many moles of oxygen does this mixture contain?

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?