Question 3:
calculate the molarity of the vinegar sample.
convert the volume of ch3cooh used (9.86 ml from last column in data table) from ml to l.
write this answer in box d.
9.86 ml x (1 l /1000 ml) = d. l of ch3cooh used = (1 pt.)
molarity of vinegar = (moles of ch3cooh) / (l of ch3cooh used)
= (box c answer) / (box d answer)
write the molarity of vinegar in box e below.
e. molarity of vinegar = (1 pt.)

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer