1.2g氢气与足量的氧气混合后,点燃爆炸,生成水的质量是()A.20g B.12g C.16g D.18g2.将8g氧化铜放入试管里,通人氢气后加热片刻,冷却,称量反应后固体物质的质量,发现较反应前减少1.4g,则试管里剩
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![1.2g氢气与足量的氧气混合后,点燃爆炸,生成水的质量是()A.20g B.12g C.16g D.18g2.将8g氧化铜放入试管里,通人氢气后加热片刻,冷却,称量反应后固体物质的质量,发现较反应前减少1.4g,则试管里剩](/uploads/image/z/2659356-36-6.jpg?t=1.2g%E6%B0%A2%E6%B0%94%E4%B8%8E%E8%B6%B3%E9%87%8F%E7%9A%84%E6%B0%A7%E6%B0%94%E6%B7%B7%E5%90%88%E5%90%8E%2C%E7%82%B9%E7%87%83%E7%88%86%E7%82%B8%2C%E7%94%9F%E6%88%90%E6%B0%B4%E7%9A%84%E8%B4%A8%E9%87%8F%E6%98%AF%EF%BC%88%EF%BC%89A.20g+B.12g+C.16g+D.18g2.%E5%B0%868g%E6%B0%A7%E5%8C%96%E9%93%9C%E6%94%BE%E5%85%A5%E8%AF%95%E7%AE%A1%E9%87%8C%2C%E9%80%9A%E4%BA%BA%E6%B0%A2%E6%B0%94%E5%90%8E%E5%8A%A0%E7%83%AD%E7%89%87%E5%88%BB%2C%E5%86%B7%E5%8D%B4%2C%E7%A7%B0%E9%87%8F%E5%8F%8D%E5%BA%94%E5%90%8E%E5%9B%BA%E4%BD%93%E7%89%A9%E8%B4%A8%E7%9A%84%E8%B4%A8%E9%87%8F%2C%E5%8F%91%E7%8E%B0%E8%BE%83%E5%8F%8D%E5%BA%94%E5%89%8D%E5%87%8F%E5%B0%911.4g%2C%E5%88%99%E8%AF%95%E7%AE%A1%E9%87%8C%E5%89%A9)
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