The Kidneys.
Calcium oxalate
calcium oxalate precipitates only in basic solution
The net ionic equation for the formation of calcium oxalate is Ca^2+(aq) + C2O4^2-(aq) -> CaC2O4(s). It represents the reaction of calcium ions and oxalate ions to form the insoluble salt calcium oxalate.
excretory organ of housefly
That's a good thing. Calcium Oxalate is the primary cause of kidney stones - you want as little calcium oxalate going through your kidneys as possible.
The chemical formula for Calcium Oxalate is CaC2O4
No, calcium oxalate is not soluble. This is what results in what are called gall stones, or kidney stones.
The skin is both a sense and excretory organ.
ammonium oxalate is added to calcium carbonate because in the reaction between the two a crystal is formed that contain the Ca+2 ion. This is useful because if you have a sample of sodium carbonate with an unknown molarity you can use the oxalate to extract this calcium and determine what the molarity of the unknown solution was
nephridia is the main excretory organ of annelida
I'm in a college chemistry course, C117, and we used ammonium oxalate to test for the presence of Ca^2+.
The reaction between calcium nitrate and sodium oxalate should produce calcium oxalate as a by-product, along with sodium nitrate. Calcium oxalate is insoluble in water and will precipitate out of solution, while sodium nitrate will remain dissolved.