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of zinc sulphide is: (a) ZnS? (b) ZnS2? (c) Zn3S2? 5. A compound of copper and oxygen contains 13.073 g Cu and 1.647 g O. Oxygen has an atomic mass of. 16.0 u. (a) What is the ... Airline regulations prohibit lithium metal batteries that contain over .... How many moles of air are there in a human lung with a volume of 2.4 ...