1. The dissociating constant of butyric acid C3H, COOH is 1.5x 10 Calculate the degree of its dissociation in a 0.005 M solution.
2. What is the hydrogen ion concentration [H*) in an aqueous solution of formic
acid if a = 0.03?
3. Calculate the concentration of acetate ions in 0.1 M solution of acetic acid in
presence of 0.01 M HCl.
4. Calculate the ionic strength and the activities of the ions in a solution containing
0.01 mole. l' of Ca(NO3)2 and 0.01 mol/l of CaCl2

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?