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How much in g of Tris HCl (HA) (157.6 MW) and Tris base (A-) (121.1 MW)...

How much in g of Tris HCl (HA) (157.6 MW) and Tris base (A-) (121.1 MW) must be added to make 1 L of 100 mM Tris buffer that is at pH7.8? pKa of Tris is 8.06
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