2. AH, is mixed in the presence of water to make A(OH), and H. gas. The
reaction becomes cold.
2. Write the balanced chemical equation. Include energy in your
equation.

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.