If the kitchen door is closed, how will that affect your ability to smell cooking odors in your room?

What is the relation between concentration of reactants and the rate of chemical reaction?

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

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.