# Chem Final Review

Satisfactory Essays
Help Room 1-3 Mon GMCS 212
2-4 Thu
Final Exam Sat 6-8 pm
Room assignments to be determined
Alternate times, email chem200@sciences.sdsu.edu

FINAL EXAM * problems 1-10 exam 1 material * probelsm 11-20 exam 2 material * problems 21-30 exam 3 material * problems 31-35 new material (MO theory from ch 11, ch 12)
All Single-choice 10 multiple choice material

2. Which pair of atoms/ions has same # of electrons? 32p and 32s 15e 16e- Al 3+ and Cl- 10e- 18e- Xe and I- 54e- 54e- 13C 14N 6e- 7e-

^ the 13 on C is mass number. = # protons + # neutrons.

3. N2 + 2 O2 + Cl2 -> 2 NO2

Start with 6 mol N2, 4 mol O2, 4 mol Cl2, Find limiting reagent and amounts remaining of excess reactants

N2 + 2 O2 + Cl 2
6 mol 4 mol 4 mol start
Max yield x (2mol No,Cl/ 1 mol N2)
Of No2Cl = 12 mol 4 mol 8 mol
O2 is the limiting reagent. 4 mol of NO2Cl
(4 mol NO2Cl) (1 mol N2 / 2mol No2Cl) = 2 mol N2 consumed

6 mol N2 – 2 mol N2 = 4 mol N2 left
^at start ^ used up

(4 mol NO2Cl) (1 mol Cl2/2mol NO2Cl) = 2 mol Cl2 consumed
4 mol Cl2 – 2 mol Cl2 = 2 mol Cl2 left
^at start ^used up

4. What is energy of a 4p electron in Li^2+ ?

E electron = -2.18 x 10^-18 J (Z^2 / n^2) Z = at. No. n=princ. Quantum#
For 1-electron atom

E = -2.18 X 10^-18 J (3^2 / 4^2) = -1.23 x 10^-18 J
5. Which of the following is not a good resonance structure?

6. How many sigma and pi bonds are in cyanogen :N TripleBOND C – C TRIPLEBOND N: 3 sigma bonds and 4 pi bonds

7. What is the only allowed value of l if n = 3 and ml = -2? l=2
8. Which bond angle in acetone has a value of 120 degrees? Lewis structure C-C-C is ~ 120 degrees Trigonal planar , ~120 degree

## You May Also Find These Documents Helpful

• Satisfactory Essays

NOT FOR ELECTRONIC STUDENT ACCESS ONLY FOR CLASSROOM USE!! Unit 9: Stoichiometry Practice 1. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula. · Coefficients show the correct proportions of atoms and molecules in a chemical reaction. They are normal sized numbers placed at the beginning of the chemical formulas in a chemical reaction during the process of balancing. They tell how many of an entire…

• 4701 Words
• 19 Pages
Satisfactory Essays
• Satisfactory Essays

CHEM 1405 Name:_____________________ Exam # 1 (Chap. 1- 3) Score: PART I – Multiple choice : (3 points each) -------1. What is the term for the study of the composition and properties of matter? a. geology b. chemistry c. alchemy d. physics -------2. Express 10,000 as a power of 10. a. 103 b. 10-5 c. 104 d. 105 -------3. How many significant digits are in 0.0250 cm3? a. 5 b. 2 c. 3 d. 4 -------4…

• 1223 Words
• 5 Pages
Satisfactory Essays
• Good Essays

004:121 Organic I Fall 2010 Final Exam Please read each question carefully before answering. Answer the questions in ink in the spaces provided inside. If you make changes as you go, please make sure your final answer is clearly indicated. Scratch papers are available at the end. Total points = 150. You have 120 min. Good Luck! ____________________________________________________________ ___________ Grading: Q.# 1. 2. 3. 4. 5. 6. 7. Score (Max) __________ (60 pts) __________ (18…

• 1428 Words
• 6 Pages
Good Essays
• Satisfactory Essays

Name:____________________________ Date:_____________________ Period:_______ Chemistry Chapter 5 Review: 1. How does the energy of an electron change when it moves closer to the nucleus? 2. The principle quantum number indicates what property of an electron? 3. What shape are s orbitals and p orbitals? 4. What is the maximum number of f orbitals in one energy level of an atom? 5. What is the maximum number of d orbitals in one principal energy level of an atom? 6. What is the maximum number…

• 489 Words
• 2 Pages
Satisfactory Essays
• Good Essays

SCH 4U1 FINAL EXAM REVIEW ATOMIC STRUCTURE AND MOLECULAR ARCHITECTURE 1. Describe the wave mechanical model of the atom. 2. Write the ground state electron configuration for Br. 3. Explain why the first ionization energy for Ne is significantly greater than Na. 4. Distinguish between ionization energy and electronegativity. 5. How does VSEPR Theory account for the fact that the bond angle in H2O is less than NH3? 6. Which of the following molecules are polar? Include diagrams…

• 2154 Words
• 9 Pages
Good Essays
• Better Essays

Abstract Qualitative analysis, a branch of analytical chemistry, deals with the identity of a substance found in a given sample, and not the amount of substance in it. It only concerns the substances present or absent in a given sample. Qualitative analysis is therefore used to determine unknown ions present in chemical samples by observing and analyzing results from various reactions of the sample with chemicals. Qualitative analysis is done through a series of steps. It is usually divided…

• 2049 Words
• 9 Pages
Better Essays
• Good Essays

Review for Test 3 MKTG 3781 Chapter 15 Buyers vs. Sellers Market: -making things convienent -Buyers market: supply is less then demand, there is more competition, more competition -Sellers: demand is less then supply, there is less competition (monopoly), manufacturers Factors affecting channel choice: -Before deciding those answer these questions: 1. target market 2. market goals 3. find -6 C’s: Cost, Capital Requirements, Control, Coverage, Character, Continuity -Intensive:…

• 962 Words
• 4 Pages
Good Essays
• Powerful Essays

Chapter 10 Introduction Poverty can be defined as a condition of deprivation due to economic circumstances that is severe enough that the individual in this condition cannot live with dignity in his or her society. The administration of Lyndon Johnson established a wide range of antipoverty programs in the 1960s—programs for education, job training and placement, housing—as a part of its “War on Poverty.” Within just a few years, many of these programs, and the whole ideology behind them, had…

• 1879 Words
• 7 Pages
Powerful Essays
• Powerful Essays

## Chem

• 8385 Words
• 34 Pages

reactor Riitta L. Keiski”, Tapio SaImib and Veikko J. Pohjola” ‘Department bDepatiment of Process Engineering, of Chemical Engineering, University of Ouh, SF-90570 Oulu (Finland) Abo Akademi, SF-20500 Turku (Finland.. (Received December 29, 1989; in final from July 5, 1991) Abstract A fixed-bed test reactor suitable for studying non-isothermal reaction kinetics was developed. The reactor allows axial and radial temperature measurement a.s well as online gas analysis. The water-gas shift reaction…

• 8385 Words
• 34 Pages
Powerful Essays
• Satisfactory Essays

Math 221 Final exam Review MyStatLab Final Exam Do the Practice Final to help you prepare for the Final Exam. Do the Week 8 Final Exam. Final Exam - Covers All Weeks You must complete this Final Exam. It is designed to test your learning in the course. * Final Exam is worth a total of 250 points and contains 23 questions. * The exam covers all Weeks and all TCOs. * The exam covers Chapters 1-7 and 9 * Remember to submit your exam when you are finished. *…

• 369 Words
• 2 Pages
Satisfactory Essays