A sample of a compund made entirely from copper and oxygen was founf to have a total mass of 0.1431g. The mass of the copper om the compound eas found to be 0.1271g.1) Calculate the mas of oxygen in the sample. 2) Calculate the number of moles of oxygen in the sample. 3) Use the mole ratio of copper to oxygen rounded off to the nearest whole nmber to determine both the formula and the molar mass of the compound.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.