Given the equation 2 co + o2 —> 2co2, how many grams of co2 form if 34.0 grams of co are combined with excess oxygen? a) 53.4 b) 21.6 c) 145 d) 107 this question is really confusing to me, and i’m not even sure how to go about answering it.

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.