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A 0.5070 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and...

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Chemistry

A 0.5070 g solid sample containing a mixture of LaCl3 (molarmass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) wasdissolved in water. The solution was titrated with KIO3, producingthe precipitates La(IO3)3 and Ce(IO3)3. For the complete titrationof both La3+ and Ce3+, 42.10 mL of 0.1204 M KIO3 was required.Calculate the mass fraction of La and Ce in the sample.

mass fraction La:

g Lag sample

mass fraction Ce:

g Ceg sample

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