What is the solution to the following equation? Your answer should use the correct number of significant figures.
(1.239 + 2.36 + 6.7800) -3.25 =

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

Which statement best describes the flow of energy in this scenario

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.