0.5927-g sample was dissolved, and the Ca2+ and Ba2+
ions present were precipitated as BaC2O4
...
0.5927-g sample was dissolved, and the Ca2+ and Ba2+
ions present were precipitated as BaC2O4
.H2O and
CaC2O4
.H2O. The oxalates were then heated in a thermogravimetric apparatus leaving a residue that weighed
0.5127 g in the range of 320°C–400°C and 0.4362 g in the range of 580°C–620°C. Calculate the percentage Ca
and percentage Ba in the sample.​
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