What is the empirical formula of a substance that is 55.4% C, 1.54% H, and 43.1% N by weight? A) CH₄N₇
B) C₃HN₂
C) C₂H₇N
D) C₄H₁₄N₂

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .