The pa of hypochlorous acid is 7.530 . A 54.0 mL solution of 0.112 M sodium hypochlorite ( NaOCl ) is titrated with 0.282 M HCl . Calculate the pH of the solution after the addition of 8.39 mL of 0.282 M HCl.

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule