Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below. Iron (Fe): [Ar]4s23d6

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 must be in balance for temperatures to remain constant?

This statement about matter and its behavior is best classified as a