26. a. Calculate the the molecular weight of Na2SO4 Atom Number of atoms Atomic Mass Total mass Molar Mass b. If a student measured a 426.12 g of NazSO4, how many moles are there in the sample?

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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.