A10 gram sample of material, a, was placed in water. four grams of it, b, did not dissolve, even after being separated and placed in a second volume of water. bcould not be decomposed into any simpler substances. evaporation of the water from the soluble portion of ayielded 6 grams of solid, c. heating bin air yielded 8 grams of gas, d, leaving no solid residue. melting and electrolysis of cyielded 2.4 grams of metal, e, and 3.6 grams of gas, f. classify each material described above by placing the corresponding letter in the appropriate place in the table below.