How many grams glycylglycine (molecular mass 132.119 grams/mole) are required to make 1 liter at 0.5 molar concentration. if you need this solution at ph 9.0 is anything else required? (2 pts)

Explanation:

The given data is as follows.

        Concentration of solution = 0.5 M

        Volume of solution = 1 L

Molar mass of Glycylglycine = 132.119 g/mol

As molarity is the number of moles present in liter of solvent.

Mathematically,      Molarity =

Hence, calculate the number of moles as follows.

            No. of moles = Molarity × Volume

                                  =

                                  = 0.5 mol

Therefore, mass of glycylglycine = mol × molar mass

                                                      =

                                                      = 66.06 g

Thus, we can conclude that 66.06 g glycylglycine is required.

55.93 is the final answer!

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