Achemist dissolves of pure barium hydroxide in enough water to make up of solution. calculate the ph of the solution. (the temperature of the solution is .) be sure your answer has the correct number of significant digits.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.