单项选择题
为除去PbCrO4中的SO42-杂质,每次用100mL去离子水洗涤,一次作三次洗涤后PbCrO4的损失分别是()
A.1.7mg,5.1mg
B.17mg,0.051mg
C.17mg,3.4mg
D.17mg,5.1mg
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单项选择题
A.1.7mg,5.1mg
B.17mg,0.051mg
C.17mg,3.4mg
D.17mg,5.1mg
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