关于硝酸与碳的反应的化学题48gC跟适量的浓硝酸反应,一定时间后,共收集到气体22.4L（标准状况下

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• 1【C11】A．grimB．scornfulC．neutralD．artificial

  【C11】

  A．grim

  B．scornful

  C．neutral

  D．artificial

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• 2已知NH4CuSO3与足量的10mol/L硫酸液混合微热，产生下列现象：①有红色金属生成
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• 3做两样本均数的t检验，当有差别时，t值越大则A、两样本均数差异越大B、两总体均数差异越大C、越有理由

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  B、两总体均数差异越大

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  D、越有理由认为两样本均数不同

  E、两样本均数差异越小

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• 4一定温度下,可逆反应2SO2+O2==2SO3达到平衡时,三者物质的量之比为2：3：4.现在缩小体积
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• 5【C8】A．desirableB．plausibleC．commendableD．remarkable

  【C8】

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• 6【C5】A．generallyB．vividlyC．fluentlyD．accurately

  【C5】

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• 8A facial expression results from one or more motions or positions of the muscles of the fa

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  【C1】

  A．convert

  B．convey

  C．conduct

  D．confine

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• 9高中化学…7.8.9求分析和正解,答案请带分析,谢谢…
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• 10（做的不知对错,要求每题解答） 7.8.9.
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