In the ideal gas law equation, what does the variable "n" stand for? a. density b. moles of gas c. number of atoms of gas d. number of molecules of gas

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

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.