Problem:
To make up a solution of phosphate buffered saline (PBS), you need 15 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 0.25 M NaCl (FW: 58.44 g/mol), and 2 mM KH2PO4 (FW: 136.09 g/mol).
Required:
Question: How many grams of each will you need to make up 750mL of PBS?
Show your calculations, but you do not need to write out any explanation.