Assuming that a chemical reaction doubles in rate for each 10° temperature increase, by what factor would the rate increase if the temperature were increased from -15 t0 40°C?

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.