CuSO4·5H2O溶液的配制可以用烧杯,100mL的移取可以用量筒。
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为什么实验中0.200 mol·L-1CuSO4溶液用移液管准确吸取,而锌粉用台秤称量?
彼得是玛丽的哥哥,难怪他使我如此想起她。Peter is Mary’s elder brother!__________________________
怪不得我昨晚没睡好觉,白天我喝了太多咖啡。________________________________ last night-- I drunk too much coffee during the day.
你确实懂得如何控制预算,怪不得你银行有那么多存款。You really know how to control your budget. ___________________________________ in the bank.