Blank - transport moves substances from an area of high concentration to an area of low concentration.

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

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.