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UH CHEM 1332 - Review Test Submission:

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1/20/19, 1(09 PMReview Test Submission: 1331RT – 2019SP-01557-CHEM1332-...Page 1 of 4https://elearning.uh.edu/webapps/assessment/review/review.jsp?attem…_1&course_id=_111396_1&content_id=_5387338_1&return_content=1&step=2019SP-01557-CHEM1332-FundamentalsofChemistry2 Course Content Homework Assignments Review Test Submission: 1331RTHReview Test Submission: 1331RT User Ashley PuentesCourse 2019SP-01557-CHEM1332-Fundamentals of Chemistry 2Test 1331RTStarted 1/20/19 11:43 AMSubmitted 1/20/19 12:27 PMStatus CompletedAttemptScore6 out of 12 points TimeElapsed43 minutes out of 48 minutesInstructionsResultsDisplayedSubmitted Answers, Correct AnswersFor numeric, type-in answers, use two decimal places unless specified otherwise in thequestion. You can use a basic scientific calculator like a TI30a but not graphing types. Follow the rules of significant figures in calculations; round to the correct number of sigfigs at the end. In questions where a logarithmic value (pH, POH, pKa, log, etc.) iscalculated, express your answer with 2 decimal places unless otherwise instructed in thequestion. Some questions may ask you to put your answer in scientific notation. Thismust be done as E-notation. Thus, 1321 to three sig figs would be entered as 1.32E3;0.00123 would be 1.23E-3. Also, if the answer requires exponential format, use 1.23E-4form, not 1.23e-4, and answers in the form 1.23x10^4 or 1.23e-4 will be countedincorrect by Blackboard. Question 1Selected Answer:b. Correct Answer:b. Which of these isotopes has the greatest number of neutrons?40Ar40ArQuestion 2Home Library Writing Center Launch - Tutoring UH Help1 out of 1 points0 out of 1 pointsAshley Puentes1/20/19, 1(09 PMReview Test Submission: 1331RT – 2019SP-01557-CHEM1332-...Page 2 of 4https://elearning.uh.edu/webapps/assessment/review/review.jsp?attem…_1&course_id=_111396_1&content_id=_5387338_1&return_content=1&step=Selected Answer: b. Correct Answer: c. When the equation below is correctly balanced, what are the coefficients of Pb and H 2O,respectively? Pb + H 2O + O 2 => Pb(OH) 22, 12, 2Question 3Selected Answer: 4. Correct Answer: 4. Refer to the following unbalanced equation: C 6H 14 + O 2 --> CO 2 + H 2O What mass of oxygen (O 2) is required to react completely with 10.4 g of C 6H 14?36.7 g36.7 gQuestion 4Selected Answer: 14.94Correct Answer: 5.74 ± 1%Calcium reacts with sulfur forming calcium sulfide. What is the theoretical yield (g) of CaS(s) thatcould be prepared from 8.3 g of Ca(s) and 2.55 g of sulfur(s)? Do not type units with your answer.Question 5Selected Answer: a. Correct Answer: a. In the reaction Cu(s) + 2Ag +(aq) => Cu 2+(aq) + 2Ag(s) the reducing agent (if any) isCuCuQuestion 6The electronic structure 1 s 22 s 22 p 63 s 23 p 64 s 23 d 8 refers to the ground state of:1 out of 1 points0 out of 1 points1 out of 1 points1 out of 1 points1/20/19, 1(09 PMReview Test Submission: 1331RT – 2019SP-01557-CHEM1332-...Page 3 of 4https://elearning.uh.edu/webapps/assessment/review/review.jsp?attem…_1&course_id=_111396_1&content_id=_5387338_1&return_content=1&step=Selected Answer: b. Correct Answer: b. NiNiQuestion 7Selected Answer: a. Correct Answer: a. The volume of a gas is 36.0 mL at 10.0°C and 4.50 atm. At what temperature (°C) will the gashave a pressure of 3.50 atm and a volume of 85.0 mL?246°C246°CQuestion 8Specified Answer for: Blank1 CuOCorrect Answers for: Blank1Evaluation Method Correct Answer Case SensitivityExact MatchCuA metal oxide with the formula MO contains 20.11% oxygen. In the box below, type the symbolfor the element represented by M. [Blank1]Question 9Selected Answer: e. Correct Answer: e. Estimate the standard enthalpy change Δ H° for the reaction below: 2CO(g) + O 2(g) → 2CO 2(g) Bond energies (kJ/mol): C–O, 358; C=O, 799; C≡O, 1071; O 2, 498–556 kJ–556 kJQuestion 10Selected Answer: b. Correct Answer:d. The lone pair of electrons on sulfur in the sulfite ion (SO 3 2-) is inan s orbital.an sp3 hybrid orbital.1 out of 1 points0 out of 1 points1 out of 1 points0 out of 1 points1/20/19, 1(09 PMReview Test Submission: 1331RT – 2019SP-01557-CHEM1332-...Page 4 of 4https://elearning.uh.edu/webapps/assessment/review/review.jsp?attem…_1&course_id=_111396_1&content_id=_5387338_1&return_content=1&step=Sunday, January 20, 2019 12:52:50 PM CSTQuestion 11Selected Answer: a. Correct Answer: b. Given the thermochemical equations below calculate ΔH for CO(g) => C(s) + 1/2 O 2(g)C(s) + O2(g) => CO2(g) ΔH = -393.5 kJCO + 1/2 O2(g) => CO2(g) ΔH = -283.0 kJ-110.5 kJ+110.5 kJQuestion 12Selected Answer: a. Correct Answer: e. How many kilojoules of heat are required to raise the temperature of 48.7 grams of ethanol(C2H5OH, 46.1 g/mol) from 0 °C to °25 C and then vaporize it completely? The heat capacity of C2H5OH at 25°C = 112.4 J/(mol.K)The molar heat of vaporization of C2H5OH = +38.56 kJ/mol4882015← OK0 out of 1 points0 out of 1


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