• 2022-06-04 问题

    The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right?

    The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right?

  • 2022-05-29 问题

    alkyl group A: n.噻吩 B: n.烷基 C: n.氧化剂 D: n.官能团

    alkyl group A: n.噻吩 B: n.烷基 C: n.氧化剂 D: n.官能团

  • 2022-06-04 问题

    The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right? A: 正确 B: 错误

    The toxicity of alkyl mercury is 10-100 times greater than that of soluble inorganic mercury, is it right? A: 正确 B: 错误

  • 2022-06-09 问题

    Which of the following has two equatorial alkyl substituents in its most stable conformation? () A: 1,1-dimethylcyclohexane B: cis-1,2-dimethylcyclohexane C: cis-1,3-diethylcyclohexane D: cis-1,4-diethylcyclohexane E: trans-1,3-diethylcyclohexane

    Which of the following has two equatorial alkyl substituents in its most stable conformation? () A: 1,1-dimethylcyclohexane B: cis-1,2-dimethylcyclohexane C: cis-1,3-diethylcyclohexane D: cis-1,4-diethylcyclohexane E: trans-1,3-diethylcyclohexane

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