1. A. Starting with a bottle of sodium phosphate a common buffer used in growth media. Which has a FW of 120 g/mol. Describe how to prepare 750 mL of a o.25 mM solution in water.

1. B. if you were to add 100 grams of sodium phosphate to 0.25 L water, what would morality be.
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This is how I did 1A:
(0.75L)(0.25 mM)(120 g/mol)
= 22.5 mg? Not sure if this is the correct units I end up with

1B I’m having trouble understanding.

Question

1.	A. 	Starting with a bottle of sodium phosphate a common buffer used in growth media. Which has a FW of 120 g/mol. Describe how to prepare 750 mL of a o.25 mM solution in water.

1.	B.	 if you were to add 100 grams of sodium phosphate to 0.25 L water, what would morality be. 
___________________

This is how I did 1A:
(0.75L)(0.25 mM)(120 g/mol)
= 22.5 mg? Not sure if this is the correct units I end up with

1B I’m having trouble understanding.