The percentage composition of sodium phosphate as determined by analysis is 42.1% sodium, 18.9% phosphorus and 39% oxygen. Find the empirical formula of the compound (work to two decimal places). (R.A.M: Na = 23, P = 31, O = 16.)
pH phosphate buffer calculation - YouTube
CHEMISTRY 101: Calculating Ion Concentration When Adding Together Two Solutions - YouTube
How to prepare a 0,2 M phosphate buffer (Na2HPO4-NaH2PO4), pH 6.4? | ResearchGate
Phosphate buffer calculation help | Physics Forums