Question: please help 12. (1 pt) You are given a stock solution 0.2M Tris- HCl,pH8 buffer. You need to make a 50 reaction cocktail that has

please help please help 12. (1 pt) You are given a stock solution 0.2M

12. (1 pt) You are given a stock solution 0.2M Tris- HCl,pH8 buffer. You need to make a 50 reaction cocktail that has a final Tris- HCl concentration of 20mM. How much stock solution would you have to add to your cocktail to get the correct buffer concentration? (Pay attention to units, show your work)

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