2.15 g of an unknown gas at 71 degrees c and 1.10 atm is stored in a 1.75 l flask.
what is the density of the gas?
what is the molar mass of the gas?

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.