本课配套习题挑战模式1/5

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单选题
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1.将30克铁片放入CuSO4溶液中片刻后,取出称量铁片质量为31.6克,求参加反应的铁的质量为_____
A:11.1g
B:10.2g
C:13.3g
D:11.2g
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