例:如K2Cr2O7标准溶液浓度为0.02150mol/L,问TFe/K2Cr2O7=?g/mL?TFe/K2Cr2O7=0.007192g/mL谁能告诉我怎么解的么.

问题描述:

例:如K2Cr2O7标准溶液浓度为0.02150mol/L,问TFe/K2Cr2O7=?g/mL?
TFe/K2Cr2O7=0.007192g/mL
谁能告诉我怎么解的么.