2. k. Molarity, normality, molality
What mass of CHa in grams, is required to react with 96.0 grams of 027
S. A 15.6 g sample of benzene is mixed with excess nitric acid. We isolate 12.0 g of
C6H5NO2. What is the percent yield of CoHoNO2 in this reaction? (2points)
4. Calculate the volume of a 0.225 M solution of potassium hydroxide, KOH,
required to react with 0.215 g of acetic acid, CH3COOH? (2points)
5. An excess of AgNO3 reacts with 185.5 mL of an AlCla solution to give 0.3259
of AgCl. What is the concentration, in moles per liter, of the AlCl2 solution?
(2points)
6. Calculate the volume of pure water that used to dilute 100 mL of 12 M NaOH to
4.75 M. (2points)

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

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.