What is the mole ratio of oxygen to propane (c3h8) in the following equation? c3h8 + 5o2 ➡ 3co2 + 4h2o

5: 1

10: 11

10: 3

1: 10

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.