Which of the following is a postulate of the kinetic-molecular theory of gases? (1) The distance between gas molecules is large in comparison to their size. (2) At a given temperature, all gases have the same average velocity. (3) Gas molecules are in constant, random motion.

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.