(1/2)常温下,10ml某气态烃A和80ml氧气（过量）混合,点燃使其充分燃烧.恢复到原状况时,残留气体体积...

(1/2)常温下,10ml某气态烃A和80ml氧气（过量）混合,点燃使其充分燃烧.恢复到原状况时,残留气体体积...
(1/2)常温下,10ml某气态烃A和80ml氧气（过量）混合,点燃使其充分燃烧.恢复到原状况时,残留气体体积为7Om|.1若A为烷烃,则其分子