The percentage purity of calcium carbonate sample whose `10g` on complete decomposition gives 4g `CO_(2)` is
A) 98.2%
B) 95.6%
C) 95.6%
D) 90.9%

A 100% pure sample of a divalent metal carbonate weighing 2g on complete thermal decomposition releases 44 g c c of carbon dioxide at STP. The equivalent mass of the metal is

If the law of constant compositon is true, what weights of calcium carbon, and oxygen are present in 1.5 g of calcium carbonate, if a sample of calcium carbonate from another source contains the following percentage composition: Ca = 40.0%, C = 12.0% , and O = 48.0% ?

A 100% pure sample of a divalent metal carbonate weighing 2 g on complete thermal decomposition releases 448 cc of carbon dioxide at STP. The equivalent mass of the metal is

The volume in litre of CO_(2) liberated at STP when 10g of 90% pure limestone is heated completely, is