Suppose a candle is burned in oxygen in a closed system where matter cannot enter or leave. Given this situation, what is equal to the mass of the original candle and the oxygen that reacted? A the mass of the burned candle B the mass of all gases in the closed system C the mass of the gases released while the candle is burned D the mass of the burned candle plus the mass of thewhile the candle is burned

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.