3. Calculate the pH of a 0.0085 mol/L solution of the strong base KOH(aq). [7]

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Why is the bottom layer of a trophic pyrimid the

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy