氢气和氧气的混合气体共10g，点燃后恢复到室温，经测定还剩下氢气1g，混合气体中含有氢气　_1g，氧气　_2g．_刷题宝

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氢气和氧气的混合气体共10g，点燃后恢复到室温，经测定还剩下氢气1g，混合气体中含有氢气　____ g，氧气　____ g．

上一题下一题 0.0难度选择题更新时间:2015-06-17 07:52:15

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2,8

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