How would you prepare 0.5 ml of a 0.5mol / L benzoate buffer at pH 4.5 using a 4.0mol / L benzoic acid solution and a 2.0mol, d * m ^ - 3 sodium benzoate solution? The pKa value of benzoic acid is 4.19.

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+