1.) what is NaF formula

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

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.

Adirect relationship can be represented by: a curve a pie chart