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Canadian 5cent coins were once 99.99% Ni, but are now mostly steel (with a small percentage of nickel still). Nickel will react with fluorine to form nickel (II) fluoride: Ni + F2 --> NiF2 a) if you produce 0.130g of NiF2, what mass of nickel reacted? b) a 2006 canadian nickel weighs 3.95g...