Rank the acids in order of increasing pK, 3. (3 marks) Caffeine, the stimulant in coffee and tea, is a weak base that ionizes in water
according to the equation:
CH19N, O2(aq) + H2O(l) – HC H1N, 0+ (aq) + OH- (aq)
A 0.15 M solution of caffeine at 25°C has a pH of 8.45. Determine the Kb of caffeine.

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Plz mark brainliest 30 points1) 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?

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest