What is the empirical formula of 24.02 g of C, 4.04 g of H, and 84.06 g of N

What reaction is taking place? 02 + c3h8 = h20 + co2

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin

Iwould appreciate if someone could me.