What is the molarity of a saline contact solution that contains 5.90 g of Sodium chloride
in 473 mL of solution?

0.213M

Explanation:

Given parameters:

Mass of sodium chloride = 5.9g

Volume of solution  = 473mL  = 0.473L

Unknown:

Molarity of solution  = ?

Solution:

Molarity is one of the ways of expressing concentration.

It is defined as the number of moles of solute in a given solution;

       mathematically;              

                    Molarity  =

Number of moles of NaCl;

                Number of moles  =

                      molar mass of NaCl  = 23 + 35.5 = 58.5g/mol

               Number of moles  =   = 0.1moles

             Molarity  =   = 0.213M

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