在实验探究课上老师给了同学们一包红色粉未该粉末是铜粉和氧化铁粉中的一种或两种.同学们为了确定该粉末的成分进行如下探究.请你参与探究并回答 Template




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tomski在实验探究课上老师给了同学们一包红色粉未该粉末是铜粉和氧化铁粉中的一种或两种.同学们为了确定该粉末的成分进行如下探究.请你参与探究并回答 coloring