In an experiment we have 4 liters of AlAin water in contain or A , and 2 liters of dubai water in contain out B . The alkalinity of water in container A and the alkalinity of water in container B are 50 and 150mg/l as caco3 ,,respectively the alkalinity of water B is 7

I see no question here.

To determine the question at hand, we need to clarify and rephrase it. It seems there is missing information, as the sentence ends abruptly. Could you please provide more details or rephrase the question?