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is coke pure form of carbon, coke is almost pure form of carbon, coke is an impure form of carbon, coke form of carbon, is coke a pure substance, coke contains percentage of carbon, is carbon dioxide in coke, what is carbon coke, coke is made of, carbon content in coke, does coke have carbonic acid, is coke a carbonated beverage, is coke a carbonated drink, what element is coke made of, is coke a compound, is coke made from coal, is coke a mineral, what does coke contain
