In order to occupy the same orbital two electrons must have

What is the percent by mass of oxygen in fe2o3

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.

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?