What unknown quantity can be calculated after performing a titration? a. volume c. mass b. concentration d. density

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

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

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.