What is the gram formula mass of Na2CO3x10H20?
A)266 g
B)142 g
C)106 g
D)286 g

Adilute aqueous potassium nitrate solution is

What is the most important factor in determining climates.

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.