Please answer questions 1 & 2 and show work.  1. Calculate the mass, in g, of chlorine in 25g of the chlorofluorocarbon CFCL3. 2. Calculate the emperical formula of a pure compound that contains 0.672 g Co, 0.569 g As, and 0.486 g O.

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A: Molarity is defined as the number of moles of solute present 1000mL of the solution. M=nV×1000

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Q: Sodium

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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.