Asked by Bruce

Calculate the amount of Na2HPO4*7H2O in grams needed to make 50 mL of a 0.40 M solution. I think this is dealing with molarity but i cant figure it all out for some reason? Help would be greatly appreciated.
Answered by Bruce
just steps is all i really need i think i need the molecular weights first then just simple molarity am i correct?
Answered by Bruce
I got 0.02 g is this right?
Answered by DrBob222
Use the Henderson-Hasselbalch equation.
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