When 10.0 grams of A was heated, 4.40 grams of B was given off, leaving 5.60 grams of E. The same quantity of B can also be prepared by combination of 1.2 grams of C and 3.2 grams of D. C decomposes to form a new substance while D was found to contain two chemical elements. The E can be electrolyzed after melting to yield 4.0 grams of F and 1.6 grams of G, neither of which can be further decomposed by ordinary chemical means. E combines with water to give 1.3 grams of J per gram of E and gas L. The gas L has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen
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