Given the following reaction: Na2S2O3 + A9B → NaBr + Na3[Ag(S2O3)2] (a) How many moles of NazS2O3 are needed to react completely with 42.7 g of AgBr? (b) What is the mass of NaBr that will be produced from 42.7 g of AgBr?

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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.