環(huán)氧乙烷的熱分解是一級(jí)反應(yīng):C2H4O=CH4+CO,377℃時(shí),半衰期為363min。求: (1)在377℃,C2H4O分解掉99%需要多少時(shí)間? (2)若原來C2H4O為1mol,377℃經(jīng)10h,應(yīng)生成CH4多少摩爾? (3)若此反應(yīng)在417℃時(shí)半衰期為26.3min,求反應(yīng)的活化能?