Question

in an experiment,5 gram of calcium carbonate on heating have 2.8 grams of calcium oxide. show that these result are in accordance in law of conservation of mass

Answer 1

The compound is Calcium carbonate.



It will react with HCl and forms metal chloride and carbon dioxide is evolved.



Carbon dioxide turns lime water milky



CaCO subscript 3 space space plus space 2 HCl space space rightwards


arrow space space CaCl subscript 2 space space end subscript plus space space


straight H subscript 2 straight O space plus space CO subscript 2.