each ionizable group of an amino acid can exist in one of two states, charged or neutral. the electric charge on the functional group is determined by the relationship between its pka and the ph of the solution. this relationship is described by the henderson–hasselbalch equation. histidine has three ionizable functional groups. complete the equilibrium equations by assigning the proper pka for each ionization and the net charge on the histidine molecule in each ionization state.

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

Is laundry detergent an acid or a base?

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?