The air you breathe is made of 21% oxygen and 78% nitrogen. the oxygen in air is the and the nitrogen is the a) solution, solute
b) solute, solvent
c) solvent, solution

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

How have the greenhouse gasses increased from the year 2000 to 2018

Choose the correct statement about licensed veterinarians in the united states. a. they must be certified by the avma. b. they can treat all nonhuman animals. c. they can can treat only animals specified on the license. d. they must choose a specialty.