Essential Study Guide for CHY 102 Midterm 2: Key Topics & Tips

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Toronto Metropolitan University**We aren't endorsed by this school

Course

CHY 102

Subject

Chemistry

Date

Dec 10, 2024

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Uploaded by JudgeNarwhal4826

1CHY 102- Chem Cram Midterm 2

Midterm 2 Info2Exam Date: Friday November 8, 2024Exam Time: 6:30 PM (EST) – 8:30 PM (EST)Exam Location: See Announcement on D2L for Exam RoomsFormat: 25 Multiple Choice QuestionsTools Allowed:Non-programmable Calculator, Pencil, Eraser, IDMaterials Provided: Formula Sheet and Periodic TableChaptersQuestionsChapterQuestionsChapter 7–Gases6 questionsChapter 13 - Solutions6 questionsChapter 12–Liquids and Solids6 questionsChapter 14 – Chemical Kinetics7 questionsCHY 102 – General Chemistry

3Midterm 2 InfoMidterm 2 – Chapters 7, 12-14Friday, November 8th, 6:30 pm–8:30 pmCheck out D2L Interactive Examples for short videoson essential skillsCheck out Video Tutorials, Textbook Questions, Adaptive AssignmentsCHY 102–General ChemistryMultiple Choice QuestionsonlyPast Exams available for practicePeriodic Table and Formula Sheetis provided.3

4Midterm 2 Rooms4First Letter of last nameRoom............You will be assigned to a room àcheck your room in the student information documentYou must write your exam in that room.Kerr Hall East (KHE)

5Filling out an Akindi SheetBubble in the correct Version Number.No Version Number = 0 on the ExamBubble in yourStudent NumbercorrectlyNo Student Number = 0on the ExamBubble in your answers when you are convinced of an answer.You will not get extra time at the end of the exam to bubble in your answers.Pencil is preferred topen so you can erase and change your answer if needed.CHY 102 – General Chemistry5W2024March 15

Study Resources6Past Midterms are available in the Midterm 2 ModulePrint off the Midterm 2 Formula Sheet and use it while you are solving practice problems.Interactive Examples are short video tutorials on important skills for every chapter. Check these out!Video TutorialsTextbook questions (Odd-numbered questions)Adaptive Assignments on Achieve

Study TipsCHY 102–General Chemistry7Readthe Notes You’ve Already Made!Don’t makenewones.Quiz Yourself!Do practice problems forcalculations and your notes for concepts.Practice of questions is key!!!Closer to the exam, bounce from topic to topic.Eat well, take breaks and get a good night’s sleep!

How many moles of helium are found in a balloon that contains 5.5 L of helium at a pressure of 1.15 atm and a temperature of 22.0 ºC?A.3.5B.0.26 C.2.6D.0.35E.3.8

The volume of O2 gas in a balloon at 1.0 atm and 305 K is 0.65 L. Calculate the volume of the gas after the temperature is lowered to 77 K while keeping the pressure and amount of O2 constant.A.0.16 LB.0.65 LC.2.8 × 10–5 LD.3.6 × 104 LE.Not enough information

Which of the following will have the greatest volume at STP?A.5.0 g H2B.5.0 g N2C.5.0 g O2D.5.0 g COE.All of the above have the same volume.

A 3.50 g sample of a diatomic gas in a 1.5 L container has a pressure of 2.42atm at 355 K. Determine the identity of the gas.A.H2B.N2C.Cl2D.O2E.F2

The four most common gases in the atmosphere are N2, O2, Ar, and CO2. Which gas has the highest average kinetic energy at room temperature?A.N2B.O2C.ArD.CO2E.All have the same average kinetic energy.

Which of the following will have the greatest average velocity at 300 K?A.N2B.O2C.CO2D.SO2E.All have the same velocity

Which type of intermolecular force is the strongest?A.DispersionB.Dipole-dipoleC.Hydrogen BondingD.Ion-dipole

Melting point−94.8°CΔHfus5.69 kJ/molCs2.15 J/g·KMolar mass58.01 g/molA 29.0 g sample of acetone is heated from a solid at −94.8°C to −50.0°C. How much energy is required for this change?A.2.80 kJB.5.64 kJC.6.18 kJD.2.96 kJE.7.84 kJ

A sample is at the temperature and pressure indicated by point a on the phase diagram below. What phase is present after the temperature is increased to the critical temperature at constant pressure?A.gasB.liquidC.solidD.More than one phase is present.

What phases are present at point f on the given phase diagram?A.gas and liquidB.gas and solidC.liquid and solidD.gas, liquid, and solidE.None of the above

If a certain metal forms in a FCC unit cell with an edge length of 3.52 Å, what would you calculate as the radius of one atom?A.4.60 ×10–8 cmB.4.98 ×10–8 cmC.8.80 ×10–9 cmD.1.24 ×10–8 cm

Why is chloroform, CHCl3, more soluble in water than is carbon tetrachloride, CCl4?A.CCl4 is nonpolar and has stronger solute–solute interactions.B.CHCl3 is polar and has stronger solute–solute interactions.C.CHCl3 is polar and has stronger solute–solvent interactions.D.CCl4 is nonpolar and has an exothermic ΔHsolute

A room-temperature solution is saturated in both KCl and CO2. When the solution is heated to near boiling, which of the following is most likely to occur?A.Some KCl precipitates out of solution.B. Some CO2 bubbles out of solution.C. Some CO2 bubbles out of solution and some KCl precipitates.D.Nothing is likely to happen.

A solution of ammonia is made by dissolving 35 g of NH3 in 90.0 g of H2O. The density of the solution is 0.898 g/mL. What is the molarity of NH3?A.53 MB. 0.39 MC. 23 MD.15 ME. not possible to calculate

What is the mass percent of a solution prepared from 15 g of NaCl in 45 g of H2O?A.33% B. 25% C. 50%D.15%

Lauryl alcohol, a component of coconut oil, is used to make detergents. A solution of 5.00 g of lauryl alcohol in 0.100 kg of benzene freezes at 4.1°C. What is the molar mass of lauryl alcohol? Kf(benzene) = 5.12°C/m; Tf(benzene) = 5.50°C.A.270 g/molB. 13.7 g/mol C. 62.4 g/molD.46.5 g/molE. 183 g/mol

Which of the following solutions will have the largest osmotic pressure?A.0.50 M C6H12O6 B.0.50 M NaClC.0.50 M K2SO4D.0.50 M FeCl3

[NO]time (s)0.10000.078500.0591000.0431500.031200Determine the rate of disappearance of NO in the first 100 seconds.A.3.4 × 10–4 M/s B.5.9 × 10–4 M/s C.4.1 × 10–4 M/s D.1.6 × 10–4 M/s E.2.1 × 10–4 M/s

H2O2 can be used as a disinfectant; it decomposes as: 2 H2O2 → 2 H2O + O2If the rate of appearance of O2 is 0.0014 Ms–1, what is the rate of disappearance of H2O2?A.0.0014 Ms–1B.0.00070 Ms–1C.0.0028 Ms–1None of the above are correct.Intro

[ClO2][OH–]Initial Rate (M/s)0.0600.0300.02480.0200.0300.002760.0200.0900.00828What is the value of the rate constant, k, for the reaction?2 ClO2 (aq) + 2 OH–(aq) → ClO3–(aq) + ClO2–(aq) + H2O (l)A.4.35 ×10–3 M–1s–1B.13.8 M–1s–1C.4.60 M–1s–1D.230. M–2s–1E.459 M–1s–1

A reaction proceeds according to first order kinetics. If the initial concentration is 1.5 M and the rate constant is 0.0294 s–1, what is the concentration after 24.5 seconds?A.0.48 MB.0.29 MC.0.075 MD.0.32 ME.0.73 M

A zero order reaction has a rate constant of 0.28. How long will it take for the reactant to reach 30% of its original concentration of 1M?A.2.5 sB.4.3 sC.0.083 sD.20 sE.1.8 s

The chirping of tree crickets has sometimes been used to predict temperatures. At 25.0 °C the rate was 179 chirps/min. At 21.7 °C it was 142 chirps/min. What is the Eaof the process?A.316 J/molB.51,300 J/mol C.0.749 kJ/molD.6.16 kJ/mol

If You Need toCram…31NoJudgingYourself!YouarestilltransitioningtoUniversityStart with banking the chapters that have the most questionsDonotmakemorenotesorreadnewmaterial! You’vealreadytakennotesin class;summarize them and quiz yourself.Try topredict what we will test you on based on the 5/6 most importantconcepts/skills foreach chapter. Make sure that you have mastered thoseconcepts/skills. You absolutely need to do the math!Remember that questions are all equally weighted; hard questions and easyquestions are all worth 1 mark. Bank as many easy questions as you can. Onlyfocus on difficult questions/topics if you have time.