Select the best answer

3. An aqueous solution of potassium chloride, KCl, IS MIXED with an aqueous solution ofammonium sulfate, (NH 4 ) 2 SO 4 . Which one of the following represents the completemolecular equation?KCl (aq) + (NH 4 ) 2 SO 4 (aq) a. 2 KCl (aq) + (NH 4 ) 2 SO 4 (aq) K 2 SO 4 (s) + 2 NH 4 Cl (aq)b. 2 KCl (aq) + (NH 4 ) 2 SO 4 (aq) K 2 SO 4 (aq) + 2 NH 4 Cl (s)c. 2 KCl (aq) + (NH 4 ) 2 SO 4 (aq) K 2 SO 4 (s) + 2 NH 4 Cl (s)d. 2 K + (aq) + CO 3 -2 (aq) K 2 CO 3 (s)e. No reaction.4. What is the maximum number electrons allowed for the n = 3 shell?a. 6b. 8c. 16d. 18e. 245. Which of the following is the correct “Valence Shell” electron configuration for Ga, usingthe short hand method?a. [Ar] 4d 10 4s 2 4p 1b. [Ar] 3d 10 4s 2 4p 1c. [Ar] 3d 10 4s 2 4p 2d. [Kr] 3d 10 4s 2 4p 1e. [Ar] 4s 2 3d 10 4p 16. How any grams of B are required to produce 12 grams of C, assuming A is present in excess?a. 12 gb. 13.71 gc. 4.67 gd. 10.5 ge. 30.86 gA + 3 B 2 CCompound A B CGrams (g) -- ? 12molar mass (g/mol) 40 72 42

7. What are the spectator ions when palladium (II) oxide and nitric acid react?a. Pd +2 & NO 3-b. H + & NO 3-c. H +d. NO 3-e. None of the above8. Which one of the following sets of quantum numbers ARE ALLOWED?a. I onlyb. II onlyc. I & IV onlyd. II & III onlye. I, II & III onlyn l m lI. 2 0 2II. 3 1 -1III. 5 1 +1IV. 4 4 +29. Calculate the energy (J) for ONE quantum of electromagnetic radiation, which has awavelength of 314 nm.a. 6.93 x 10 -33 Jb. 2.08 x 10 -22 Jc. 2.08 x 10 -40 Jd. 6.33 x 10 -17 Je. 6.33 x 10 -19 J10. An aqueous solution of potassium phosphate, K 3 PO 4 , REACTS with an aqueous solution ofiron (III) nitrate, Fe(NO 3 ) 3 . Which one of the following represents the NET IONICequation for the reaction?K 3 PO 4 (aq) + Fe(NO 3 ) 3 (aq) a. K + (aq) + NO 3 - (aq) KNO 3 (aq)b. K 3 PO 4 (aq) + 2 Fe(NO 3 ) 3 (aq) Fe 2 PO 4 (s) + 3 KNO 3 (aq)c. Fe +3 (aq) + PO 4 -3 (aq) FePO 4 (s)d. 2 Fe +2 (aq) + PO 4 -3 (aq) Fe 2 PO 4 (s)e. None of the above are correct.

11. Indicate which of the following is CORRECT with regard to size and shape of an orbital andits corresponding quantum numbers, n and l:a. I onlyb. II onlyc. III onlyd. II and III onlye. All are incorrect.I. n = 1 and l = 0 represents the 1s orbitalII. n = 3 and l = 2 represents the 3p orbitalIII. n = 3 and l = 3 represents the 3f orbital12. What is the short hand electron configuration for the Cr?a. [Ar]4s 2 4d 4b. [Ar]4s 2 3d 4c. [Ar]4s 1 3d 5d. [Kr]4s 2 3d 4e. [Kr]4s 1 3d 513. A student used 22.5 mL of 0.80 M KOH to titrate 30 mL of a citric acid, H 3 C 6 H 5 O,solution. How many grams of citric acid were present in the sample?Use MM of citric acid as 192 g/mola. 1.152 gb. 3.456 gc. 10.37 gd. 0.094 ge. 8.845 g3 KOH (aq) + H 3 C 6 H 5 O (aq) K 3 C 6 H 5 O (aq) + 3 H 2 O(l)14. What is the correct “long form” electronic configuration for Fe?a. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 3d 5b. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 3d 7c. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 7d. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 5e. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 6

15. Based on “orbital” configuration, how many unpaired electrons are there in the highestoccuping orbital/subshell for the chlorine atom?a. 0b. 1c. 2d. 5e. None of the above.16. Which of the following statements is (are) TRUE?I. The 1s orbital is higher in energy than the 3d orbital.II. The p orbital only has 2 orientations.III. The s orbital only has 1 orientation.a. I onlyb. II onlyc. III onlyd. I & II onlye. All are True.17. Calculate the number of milliliters (ml) that are required to contain 80 grams of chromium(III) nitrate in an 1.0 M solution.a. 367 mlb. 336 mlc. 702 mld. 354 mle. 452 ml18. Which of the following is (are) weak electrolytes in water?a. I onlyb. II onlyc. III onlyd. I & III onlye. I, III & IV onlyI. NH 3II. CO 2III. H 2 CO 3IV. HF

19. You are a student worker assigned to make solutions in the first floor stockroom of ChoppinHall for the CHEM 1212 labs. Mr. Roya Hughes needs you to make 2.0 L of0.20 M KOH solution. How many grams of KOH will you require?a. 224.4 gb. 5.610 gc. 22.44 gd. 56.10 ge. 0.045 g20. How many milliliters of 10.0 M KOH solution are required to make 1.0 liter of a 0.05 Msolution?a. 5 mlb. 200 mlc. 5 x 10 -3 mld. 1000 mle. 1 ml21. An 20 ml of unknown molarity of H 2 CO 3 requires 40 ml of an 0.1M KOH solution at theequivalence point. What is the molarity of H 2 CO 3 ?a. 1 Mb. 0.1 Mc. 0.2 Md. 0.4 Me. 3 MH 2 CO 3 (aq) + 2 KOH (aq) → K 2 CO 3 (aq) + 2 H 2 O (l)22. What is the short hand electron configuration for the As?a. [Kr]4s 2 4d 10 4p 3b. [Xe]5s 2 4d 10 4p 3c. [Ar]5s 2 4d 10 5p 3d. [Kr]4s 2 3d 10 4p 3e. [Ar]4s 2 3d 10 4p 3

23. Which orbital is described by the shape below?a. sb. pc. dd. fe. None24. What is the molecular equation for when ammonium carbonate and tungsten (IV) nitratereact?a. 2 CO 3 -2 (aq) + Ta +4 (aq) Ta(CO 3 ) 2 (s)b. (NH 4 ) 2 CO 3 (aq) + W(NO 3 ) 4 (aq) WCO 3 (s) + 2 NH 4 NO 3 (aq)c. 2 (NH 4 ) 2 CO 3 (aq) + Ta(NO 3 ) 4 (aq) Ta(CO 3 ) 2 (s) + 4 NH 4 NO 3 (aq)d. 2 (NH 4 ) 2 CO 3 (aq) + W(NO 3 ) 4 (aq) W(CO 3 ) 2 (s) + 4 NH 4 NO 3 (aq)e. None of the above.25. Who am I? This person hypothesized that Energy must be emitted or absorbed in discretepackets or quanta and the energy for each quanta is proportional to its frequency times someconstant.a. Plankb. Einsteinc. Bohrd. Younge. Maxwell26. BONUS: There is a spill of 500 ml of 10.0 M HNO 3 ! How many grams of CaCO 3 will youneed to neutralize this spill?CaCO 3 (s) + 2 HNO 3 (aq) → Ca(NO 3 ) 2 (aq) + H 2 O (l) + CO 2 (g)a. 1 gb. 100 gc. 250 gd. 500 ge. 1000 g