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BYU | CHEM 105
Professors
- Wood S,
- ,
- Macedone,
- Nielson,
- Neilson,
- Dearden,
- Dr. Macedone,
- Lamb,
- Jeffrey Macedone,
- Brown
100 sample documents related to CHEM 105
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BYU CHEM 105
Professor Phill Brown Number of protons is always the same Disease Amu atomic mass units Atomic mass in grams CationAnionExpressed partly in significant digits 456+/- 2 6.022*10^23 atoms Millikan charge quantized e-1.6x10^-19 coulombs The product of wavel -
BYU CHEM 105
Key for Micro Exam 4 Question 1 Question 1: Pick the species which is a free radical and exists as resonance structures: Answers: (a) nitrogen dioxide (b) nitrite ion (c) nitrate ion (d) perchlorate ion (e) benzene (f) sodium chloride (g) more than one of -
BYU CHEM 105
Chemistry 105 Got an iClicker? Is it registered? What about mastering chemistry Chemical Beginnings The Alchemist by Cornelius Bega 1663 Trial and terror The Alchemist\'s Experiment Takes Fire by Heindrick Heerschop Mining traditions Clear terms and access -
BYU CHEM 105
1 Business Monday is a holiday Mastering Chemistry Homework #3 is due Wednesday, not Monday. Exploratory lab (C170) Safety contract required before working in the lab Just in case, safety contract is posted on blackboard Schedule is now posted on the door -
BYU CHEM 105
Student Advisory Council experience: Students directing improved student 1) Bring about positive change 2) Help all student perspectives be heard 3) Improve your resume/applications 4) Get leadership/volunteer experience To apply, fill out an application -
BYU CHEM 105
Chemistry 105 Hydrogen Gas Discharge Lamp What are the parts? How is this device powered? What does it look like powered? What does it look like through diffraction grating glasses? Flashlight H has only electron, and yet multiple wavelengths (nm) 397.00 -
BYU CHEM 105
iClicker Question How much of the reading did you do? A. I didnt have a chance. B. I quickly skimmed the reading. C. I read most of the reading. D. I read all of the assigned reading. Business Add/drop deadline TRUST Necessary Skills List posted on blackb -
BYU CHEM 105
Chemistry Patterns 105 look like? What will the fourth one 1 2 3 4 Closed neighbor, textbook, and notes! How many electrons can reside in the sixth energy level of a atom? A. 8 B. 18 C. 32 D. 72 E. 88 Last Time Last Time Introduced electron orbital shapes -
BYU CHEM 105
Chemistry 105 Bitter Almonds Almonds contain small amounts of potassium cyanide. What is the formula weight (in amu) of potassium cyanide (KCN)? A. 49.01 B. 56.99 C. 65.12 D. 78.95 tri-nitro-toluene TNT is a powerful explosive. Its chemical formula is C7H -
BYU CHEM 105
Chemistry 105 Diamond Ring Under White Light Diamond Ring Under UV Light A mole of diamond (60 carat) $7,230,500. *Mass, mole, particle conversions Mass Molar mass Moles Avogadros # Atoms or molecules Industrial processes and Ni-Cd batteries are major sou -
BYU CHEM 105
Chemistry 105 Dissociation NaCl (s) Na+ (aq) + Cl- (aq) Write the molecular, total ionic, and net ionic equation for: KI (aq) + Pb(NO3)2 (aq) Molecular Equation: 2KI (aq) + Pb(NO3)2 (aq) PbI2 (s) + 2KNO3 (aq) Total Ionic Equation: 2K+(aq) + 2I-(aq) + Pb2+ -
BYU CHEM 105
Chemistry 105 Acids and bases Acid from acidus sour Substances which increase H+ in water Proton donors Base low in place Substances which react with H+ in water Proton acceptors HCl (aq) H+ (aq) + Cl- (aq) NH3(aq) + H+ (aq) NH4+ (aq) Both can be corrosiv -
BYU CHEM 105
Chemistry 105 Which is a redox reaction? A. B. C. D. E. Ca2+ + 2Br- CaBr2 CH4 + O2 CO2 + H2O H2O +NaF NaOH +HF AuNO3 + HI HNO3 + AuI None of the above Exam 1 Blank exams will always be posted. A corrected version is also posted. A key will be posted with -
BYU CHEM 105
Atoms of which element will have the largest atomic radius? A. Rb B. Sc C. Al D. Si E. F Business Juggling analogy Student Survival Session A. B. C. D. Saturday 9am Monday 4pm Tuesday 2pm Wednesday 4pm Orientation Last time . . . Atomic size is governed b -
BYU CHEM 105
Which is the acetate ion? A. C2O4B. C2O42C. HCO3D. C2H3O2E. C2H3O22- Todays focus A brief look at some periodic properties and representative reactions. Periodic properties - alkali metals Exist in nature as compounds why? Low ionization energies. Identif -
BYU CHEM 105
mi he C 05 1 try s Ionic compounds: giant gypsum crystal cave in Which is the oxalate ion? A. C2O4B. C2O42C. HCO3D. HCO32E. C2H3O22- Internet Tricks Instant ice! Magic water! Ionic Lattice Table salt from elements Ionization energy of Na Electron Affinity -
BYU CHEM 105
Chemistry 105 The proper name of SO32- is A. sulfate B. sulfide C. sulfurous D. sulfitous E. sulfite Business Student Survival Session W111 4pm today Taking charge of your student career & memory *Exam 1 issues must be resolved by tomorrow. SO2 gas is rel -
BYU CHEM 105
Chemistry 105 What is the structure of ozone? OO O OO O O-O=O O=OO From 2-D to 3-D Lewis Structures OC Molecular Shape Molecular shape influences reactivity A model to approximate shape Electron domains (regions of electron density) repel each other Best -
BYU CHEM 105
Chemistry 105 Its National Chemistry Week! Molecular shape Water Carbon Dioxide Polar or Non-polar? The molecule PCl3 is: A) B) Polar Non-polar HINT: 1. Draw Lewis structure 2. Determine electronic and molecular geometry 3. Examine dipoles and overall dip -
BYU CHEM 105
Chemistry 105 Carbon Carbon is critical in organic chemistry. Carbon bonds w/ other carbon atoms in long chains. Powdered carbon is BLACK. Carbon Carbon is critical in organic chemistry. Carbon bonds w/ other carbon atoms in long chains. Powdered carbon i -
BYU CHEM 105
Chemistry 105 Where am I? Atoms Bonding Molecules Gases Liquids Solids Energy Reactions 106 What comes to mind when you think of a gas? What is vapor? What is a gas? A gas . . . is a collection of atoms or molecules Particles are far apart Particles const -
BYU CHEM 105
Chemistry 105 Goals To prepare for Med./Dent. School Goal - know the content To acquire chemistry knowledge and skills Goal the final exam To become a responsible citizen/voter Goal Be able to apply content To see the Chemistry in daily life Goal develop -
BYU CHEM 105
Chem 105 Comments If your test average is less than 50% I want to meet with you. Utilize TA and instructor office hours Deadline to resolve Exam 2 issues extended to Monday. Necessary Skills list updated for Chapter 10 tonight. Starting where we left off -
BYU CHEM 105
Intramolecular forces Ionic Bonding Covalent Bonding Metallic Bonding I n t e r m o l e c u l a r Comparison of Forces Intramolecular Attractions between atoms Strong Determine geometry Intermolecular forces Dipole-dipole - Attraction between polar molecu -
BYU CHEM 105
Gas Liquid Vapor Pressure Particles leave the bulk liquid and enter the vapor phase. Eventually, in a closed container, # of particles leaving = # entering liquid. This exerted pressure on the vessel is equal to the vapor pressure. What factors affect vap -
BYU CHEM 105
AsO4-3 - arsenate ; HCO3- -hydrogen carbonate (bicarbonate); Rad-Ca>Ca+, Cl<Cl BO3-3 -borate ;HSO4- -hydrogen sulfate (bisulfate) ; Ioniz-F+>F B4O7-2 - tetraborate ; HSO3- -hydrogen sulfite (bisulfite); Giga-10-9 BrO3- - bromate-ic HC2O4- -hydrogen oxalat -
BYU CHEM 105
AsO4-3 - arsenate ; HCO3- -hydrogen carbonate (bicarbonate); Rad-Ca>Ca+, Cl<Clatomic #- protons and electrons BO3-3 -borate ;HSO4- -hydrogen sulfate (bisulfate) ; Ioniz-F+>F atomic weight- protons plus neutrons B4O7-2 - tetraborate ; HSO3- -hydrogen sulfi -
BYU CHEM 105
Polyatomic Ions List Polyatomic ions Names -3 AsO4 arsenate BO3-3 borate -2 B4O7 tetraborate BrO3 bromate BrO hypobromite -2 CO3 carbonate CNcyanide -2 C2O4 oxalate C2H3O2 acetate -2 C4H4O6 tartrate ClO4 perchlorate ClO3chlorate ClO2 chlorite ClO hypochlo -
BYU CHEM 105
Outer atoms 2 Lone pairs 0 Charge clouds 2 3 0 3 trigonal planar 2 1 3 bent 4 0 4 tetrahedral 3 1 4 trigonal pyramidal 2 2 4 bent 5 0 5 trigonal bipyramidal 4 1 5 seesaw 3 2 5 T-shaped 2 3 5 linear 6 0 6 octahedral 5 1 6 square pyramidal 4 2 6 square plan -
BYU CHEM 105
Chemical Equilibrium A Study of Balance? 1 Some Interesting Observations Lets make a solution by mixing 0.03 M FeCl3 and 0.10 M KSCN in water Now lets play a little! 2 Welcome to a Looooong Discussion Rate = k[HI]2 Rate = k[H2][I2] 3 Establishing Equili -
BYU CHEM 105
Chemistry Study Strategies Inventory1 The inventory listed below outlines behaviors that you should exhibit in order to excel in chemistry. Write true or false beside each of the following statements describing the way you study. The scoring scale is give -
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BYU CHEM 105
HOW TO STUDY The following material was written by an unknown (to me) professor in Organic Chemistry at the University of Maryland, Baltimore County. How To Study Chemistry Countless times students have asked me what is the best way to study. While the re -
BYU CHEM 105
Chemistry 105 PERIODIC CHART OF THE ELEMENTS IA 1 H VIIA IIA IIIA IVA VA VIA 3 6.941 11 Na 22.98977 19 K 39.0983 37 Rb 85.4678 55 Cs 132.9054 87 Fr 1 2 H 1.0079 1.0079 Li Noble Gases 4 5 Be B 9.012182 12 Mg 10.81 IIIB IVB VB VIB VIIB ( VIIIB ) IB IIB 24.3 -
BYU CHEM 105
Species in Initial Mid- point Equivalence Flask Point unreacted in flask ! 1000 = Strong 1 pH from C0* No significance pH = 7.00 Buffer region: use Henderson- Hasselbalch (Use equati -
BYU CHEM 105
Key for Micro Exam 1 Question 2 JDL Edit Question 2: Which type of light has the shortest wavelength? Answers: A) infrared B) ultraviolet C) visible red D) visible blue E) microwave F) x-ray The electromagnetic spectrum accounts for all light. This includ -
BYU CHEM 105
Key for Micro Exam 1 Question 4 JDL edit Question 4: (Do this type of problem on paper without a calculator. Take it step by step using dimensional analysis. Make appropriate approximations where necessary to choose the logical answer from the choices bel -
BYU CHEM 105
Key for Micro Exam 1 Question 7 JDL edit Question 7: (Try this problem on paper without a calculator. Make appropriate approximations where necessary to choose the logical answer from the choices below.) The density of iron is approximately 8 g/cm3. How m -
BYU CHEM 105
Key for Micro Exam 1 Question 8 JDL edit Question 8: (Try this problem without a calculator.) The energy of an infrared photon is 1 x 10-20 J. This energy could just as well be expressed as the amount of energy per mol of these photons, thus: Answers: (a) -
BYU CHEM 105
Key for Micro Exam 1 Question 13 edited by JDL Question 13: The mass of a very small rock is 570. g (micrograms). What is the mass expressed in pg? Answers: (a) 5700 (b) 5.70 x 10-4 (c) 5.70 x 105 (d) 5.70 x 108 (e) 5.7 x 104 (f) 5.70 x 10-16 This is a co -
BYU CHEM 105
Key for Micro Exam 1 Question 15 JDL edit Question 15: A 56 g sample of rock from the moon was found to contain 25% Si by weight. How many protons are contained in the silicon atoms in this sample? Answers: (a) 4.2 x 1024 (b) 8.1 x 1024 (c) 3.9 x 1023 (d) -
BYU CHEM 105
Key for Micro Exam 1 Question 16 JDL edit Question 16: The mass of an alloy (a simple mixture) of aluminum and iron is 20 kg. The densities of iron and aluminum are 8 g/cm3 and 4 g/cm3 respectively. What is mass of the aluminum if the iron atoms occupy 20 -
BYU CHEM 105
Key for Micro Exam 1 Question 19 JDL edit Question 19: A 100 g sample of a material contains 12 grams of an ion of carbon with a charge of -2. How many moles of electrons are found in the carbon ions? Answers: (a) 1 (b) 2.4 x 1024 (c) 4 (d) 8 (e) 4.8 x 10 -
BYU CHEM 105
1. d 2. a or c would be acceptable 3. b 4. a 5. c 6. c 7. a 8. b 9. a 10. d 11. e 12. c 13. a 14. b 15. d 16. b 17. b 18. a 19. c 20. h 21. a 22. c 23. b 24. a 25. g 26. d 27. b 28. c 29. a 30. e 31. d 32. g 33. a 34. g 35. g 36. h 37. g 38. d 39. e 40. a -
BYU CHEM 105
1. Which of the following is true about net ionic equations? a. b. c. d. e. all ions in the solution are included in the equation, even if they dont react the charges on each side always add up to +1 the charges on each side always add up to -1 the charge -
BYU CHEM 105
Chem 105 Current Material Calculating partial pressure mole fraction PA = XAPT In other words: the fraction of the P due to A is the fraction of molecules that are A. Micro Exam Question (Try this without a calculator) A bottle contains 2 g of helium, 10 -
BYU CHEM 105
Chem 105 Exam 2 Week 8 Quick question to test your understanding of saturation! If a solution of salt and water were found to have salt crystals on the bottom even after long stirring, the solution would be unsaturated monosaturated saturated supersaturat -
BYU CHEM 105
Chem 105 Exam 2 Week 6 Valence Bond Model What does it does: shapes of electron bonds focus on individual bonds within the molecule bond orders What it does not: bond energies electron distributions in molecule Simplest Case= Atomic Orbital Overlap s-s ov -
BYU CHEM 105
Exam3Review OrganicChemistry Thingstoknow Alkanes:hydrocarbonswithONLYsinglebonds Canbearingstructure(cycloalkane) *Methane:CH4 *Ethane:C2H6 Alkenes:hydrocarbonswithatleastoneDOUBLE bond Ex)EtheneC2H4 Alkynes:hydrocarbonswithatleastoneTRIPPLE bond -
BYU CHEM 105
Exam3Review Thermochemistry Knowyourvocab: PhaseChanges Fusion,melting,vaporization,sublimationetc. Warmingcurveknowhowtodrawoneand understandwhatitrepresents liquid \"Fusion\"and\"sublimation\" describethechangesinstate a) solidtoliquid&liquidtogas from b) -
BYU CHEM 105
Chem 105: Week 5 Bond Polarity The greater the difference in electronegativity between two atoms, the more polar their bond. Ex) Which bond is more polar, BCl or C Cl? Polar molecules should have: 1. polar bonds 2. geometry that allows for polar-ness Ex) -
BYU CHEM 105
ChemistryWeek7 haha. Whatdoyoucallaswimteammadeupofgirls namedJennifer? Hydrogens Wheredidtheygo? Izinctheyargon. Whatiftheyvedrowned? ThenIguessyou\'llhavetofishthemoutand barium. Stoichiometry: calculationswithchemicalformulasandequations 1. Writebala -
BYU CHEM 105
Chemistry Cake Most cake recipes require milk and eggs. One of the functions of these ingredients is make the cake rise. In this recipe, the cake rises because of an acidbase reaction between baking soda and vinegar. 1 cups flour tsp. salt 1 tsp baking s -
BYU CHEM 105
Chem Chem 105 105 Ifyouhavequestions beforeorafterclass, pleaseaddressthem tothePeerMentors. Learning Communities Hydrogen, Helium, Sodium, Magnesium please sit in rows 1&2 1 Turn to a neighbor Turn to a neighbor you dont know you dont know and introduce -
BYU CHEM 105
Chem Chem 105 105 Friendly reminder: Friday is open seating dayAND CANDY DAY! 1 Ifyouhavequestions beforeorafterclass, pleaseaddressthemto thePeerMentorsfirst. Answers to many of the Answers Problems in the text are found in the text. For Practice Exercis -
BYU CHEM 105
Chem Chem 105 105 Note: some students still havent registered their clickers! See syllabus p 5. 1 GOT CLICKER (set to CC)? Learning Communities Li, Be, Al, Si please sit in rows 1&2 John D. Lamb, BYU Importantissimo large # of drops for Warm-up Friendly r -
BYU CHEM 105
Chem Chem 105 105 Friendly Friendly reminder: reminder: Friday is open seating dayAND CANDY DAY! 1 Pickupahandoutand someglassesbefore classpleasedont touchthelenses. Answer keys to the Answer Practice Sheets are posted on Blackboard after the due date. a -
BYU CHEM 105
Chem Chem 105 105 1 Learning Communities Li, Be, Al, Si please sit in rows 1 and hence he knows how to subject all other beings to him. other Tea -
BYU CHEM 105
Chem 105 Open seating: candy day! Seek ye out of the best books words of wisdom; seek learning, even by study and also by faith Teach ye diligently, and my grace shall attend you, that you may be instructed of things both in heaven and in the earth, and u -
BYU CHEM 105
Chem 105 Please do not chat about the macro-exam. Rows 1&2 (royal boxes): 1 Nitrogen, Oxygen, Chlorine, Argon Sammartini John D. Lamb, BYU Therootsofeducation arebitter,butthefruit issweet. Aristotle 2 John D. Lamb, BYU Todays objective Be able to recogni -
BYU CHEM 105
Chem 105 Open seating: its candy day! 1 Sammartini CQ + PQ > IQ (Curiosity Quotient plus Passion Quotient is greater than Intelligent Quotient) Give me the kid with a passion to learn and a curiosity to discover and I will take him or her over the less pa -
BYU CHEM 105
Chem 105 Did you ever wonder? If you throw a cat out a car window does it become kitty litter? If corn oil comes from corn, where does baby oil come from? When a cow laughs does milk come up its nose? How did a fool and his money GET together? How do they -
BYU CHEM 105
Chem 105 Rows 1&2: Aluminum, Silicon, Lithium, Beryllium 1 Sammartini TUTORIAL LAB The Chemistry Department provides a free tutoring lab in W152 BNSN for all general chem students. All of the PMs for chemistry 105 and 106 are encouraged to hold office hou -
BYU CHEM 105
Chem 105 While waiting, discuss the types of bonds found in this molecule with your neighbor. N N N O 1 Candy Day sit where you may! N O O O R N R N N R O N R O O N O N N N Sammartini John D. Lamb, BYU 2 \"To the Latter-day Saints, salvation itself, under -
BYU CHEM 105
Chem 105 While waiting, discuss the types of bonds found in this molecule with your neighbor. N N N O 1 Candy Day sit where you may! N O O O R N R N N R O N R O O N O N N N Sammartini John D. Lamb, BYU 2 \"To the Latter-day Saints, salvation itself, under -
BYU CHEM 105
Chem 105 Rows 1&2 : Ps, Ss, Bs, Cs Take careful notes in class or get a copy of the notes taken by one of the recitation leaders. Remember: you are learning as you write. - Recipe for Success 1 Haydn John D. Lamb, BYU Happy Canadian Thanksgiving! 2 John D -
BYU CHEM 105
Chem 105 1 Rows 1&2 (royal boxes) are reserved for the: The whole idea of Mormonism is improvement mentally, physically, morally, and spiritually. No halfway education suffices for the Latter-day Saint. Lorenzo Snow Cls, Ars, Ns, Os Boccherini John D. Lam -
BYU CHEM 105
Chem 105 1 Open seating todayits candy day! Boccherini Want to enjoy your BYU experience? Focus your mind more on learning than on grades (even though those are important too). John D. Lamb, BYU 2 Take a little time, now and again to reach out beyond your -
BYU CHEM 105
Chem 105 1 If you think you can get an A in Chem 105 while studying less than the 8-12 recommended Rows 1&2 (royal boxes) hours per week, you are out of your are reserved for the: mind! Ks, Cas, Fs, Nes -Aristotle Arne John D. Lamb, BYU We have now reache -
BYU CHEM 105
Chem 105 Heights by great men reached and kept were not obtained by sudden flight but, while their companions slept, they were toiling upward in the night. (Longfellow) 1 Rows 1&2 : Ns, Os, Cls, Ars Arne John D. Lamb, BYU Macro-Exam 2 2 covers up to and i -
BYU CHEM 105
Chem 105 There is no truth that does not have its source in the author of truth. Karl G. Open Seating: Candy Day! Arne Maeser John D. Lamb, BYU In humans, the ability to discern patterns is astonishingly general. Indeed, we are driven to seek patterns in -
BYU CHEM 105
Study Guide* After studying each chapter and learning from class lecture/discussion, you should be able to: Chapter 1: Food Choices and Human Health 1. Identify the ways that nutrition affects health. 2. Identify the six major nutrients, their roles in th -
BYU CHEM 105
Chem Chem 105 105 Orbitron site: http:/www.shef.ac.uk/ chemistry/orbitron/ Rows 1&2 (royal boxes) are reserved for: 1 Phosphorus, Sulfur, Chlorine, Argon Vocational education must not be confused with narrow job-training. Animals are broken in and trained -
BYU CHEM 105
Practice Sheet 14 BLC & DLC answers 14B.1 a) 2H2O() = OH(aq) + H3O+(aq) conjugate base = OH conjugate acid = H3O+ acid = H2O base = H2O b) Water can act as an acid and as a base because it is amphoteric. NH3(aq) + H2O() = NH4+(aq) + OH(aq) conjugate base -
BYU CHEM 105
Practice Sheet 15 BLC & DLC Answers 15B.1 For these problems, we will need to use the formula pH = log[H+]. a) [H+] = 10pH = 104.73 = 1.86 105 M b) pH = log[H+] = log (1.57 103) = 2.80 c) [H+] = 101.34 = 0.0457 M d) pH = log(0.95) = 0.022 e) pH = log(0.01 -
BYU CHEM 105
Practice Sheet 2 BLC & DLC Answers 2B.1 a) b) c) d) 5.5 107 g 3.4 103 L 3.3 108 mmol 2.73 1015 ng 2B.2 1 L 1000 mL 19.31 g 1 kg 2.2046 lbs. = 42.57 lb. (1 dm3) 3 1 dm 1 L 1 mL 1000 g 1 kg 2B.3 1 mol C 12.000 g C 23 1 mol C 6.022 x 10 atoms 2D.1 A -
BYU CHEM 105
Practice Sheet 3 BLC microwaves < infrared light < x-rays < gamma rays. There is an inverse relationship between wavelength and energy (i.e., the longer the wavelength, the lower the energy, and vice versa). There is an in -
BYU CHEM 105
Practice Sheet 4 BLC & DLC Answers A. See BLB pp. 222-224. Key points you might include in your answers: The Bohr model assumed quantized electron energies but failed to explain why the energies are quantized. The Bohr model works only for single-electr -
BYU CHEM 105
Practice Sheet 5 BLC & DLC Answers 5B.1 O: 1s22s22p4 or [He] 2s22p4 Cu: 1s22s22p63s23p64s23d9 or [Ar] 4s23d9 Ca2+: 1s22s22p63s23p6 or [Ar] V2+: 1s22s22p63s23p63d3 or [Ar] 3d3 (the two 4s electrons are lost in forming the ion. This is technically correct, -
BYU CHEM 105
Practice Sheet 6 Key BLC P > Mg > Ca P > As > Ge > In 6B.2 a) b) c) Metal Nonmetal Metal 6B.3 a) b) c) d) Bromide ion Sn4+ Lithium ion Ba2+ 6B.4 a) b) c) d) Brominegains one electron. Potassiumloses one electron. Xenonalready -
BYU CHEM 105
Practice Sheet 7 BLC & DLC Answers 7B.1 a) b) c) Sulfur trioxide Si2Br6 Dinitrogen tetraoxide d) e) f) Tetraphosphorus decaoxide CS2 Nitrogen trifluoride 7B.2 a) 2, 1, 0 c) 3, 2, 0 e) 0, 2, 0 f) 3, 0, 0 7D.1 a) The same as below but with dots instead of l -
BYU CHEM 105
Practice Sheet 8 BLC & DLC answers 8B.1 Remember to do the entire calculation with more than the required number of significant figures so as to avoid round-off errors. Then, last of all, round the final answer to 3 significant figures as the problem requ -
BYU CHEM 105
Practice Sheets 13 BLC & DLC Answers 13B.1 First calculate the theoretical yield, and then do the simple division. 1 mol Al 1 mol AlBr3 266.69 g AlBr3 (20.0 g Al) 26.98 g Al 1 mol Al 1 mol AlBr = 198 g Al 3 87.4 g Al Percent yield = 198 g Al 100 = -
BYU CHEM 105
Name: EXSC 464 / Section _ Instructor: LAB 1: Pre-Exercise Screening / Resting HR and Blood Pressure Prelab 1 List the five components of health related physical fitness. Cardiorespiratory fitness, muscle strength, flexibility, muscle endurance, body comp -
BYU CHEM 105
Qualitative Exam Fall 2010 NO NET IONIC EQUATIONS This means you will not have to balance any net ionic equations What should I study? Memorize flow charts Memorize colors Silver chloride Chromate ion Aluminum hydroxide Rust colorless white red white -
BYU CHEM 105
NAME:_ Scale: 1 No knowledge, understanding or ability 2 Little knowledge, understanding or ability 3 Some knowledge, understanding or ability 4 Adequate knowledge, understanding or ability 5 Extensive knowledge, understanding or ability Please rate your -
BYU CHEM 105
Chemistry 106 Recitation 2-24 Name: Section: 1. (2 points) Which of the following compounds dissolve in water? (Circle if soluble) Na2CO3 CaCO3 PbSO4 CaS Cd(OH)2 NH4S NaCl 2. (2 points) What is the solubility of cadmium hydroxide? Ksp = 2.5 10-14 Ksp=[Cd2 -
BYU CHEM 105
INTRODUCTION TO THE BOOK OF MORMON Mid-Term Examination Daniel K Judd Re1-A 121 PLEASE DO NOT MAKE ANY MARKS ON THIS EXAM YOU MAY USE YOUR SCRIPTURES Brigham Young University Directions: Please select the best answer. The questions in italics are intended -
BYU CHEM 105
TEST REVIEW: RELIGION 121 - EXAM ONE Fall Semester - 2010 Directions: Please use this review sheet as a guide to assist you in your preparation for the Mid-term Exam. The exam will be fifty questions in length including multiple choice, true/false and ess -
BYU CHEM 105
Required books for NDFS 100 (Fall 2010): Nutrition: Concepts and Controversies, Twelfth Edition, by Sizer and Whitney The lectures and all quizzes and tests are based on the 12th edition. It is different enough from the 11th edition that you will be at -
BYU CHEM 105
Research Papers Rel-A 121 Fall Semester At this point, I am sure that you are all anxiously gathering information for your ten-page papers. Captivated by your chosen topic and inspired by your insightful thesis, you are probably wondering if twenty pages -
BYU CHEM 105
COMMUNICATING THE OBSERVATIONS Displaying the data Communicating the data can the most important portion of helping others to understand the information uncovered in an observation or experiment. Visually, tables, bar-graphs, linegraphs, histograms, scatt -
BYU CHEM 105
DECIDING HOW TO OBTAIN THE OBSERVATIONS Scientists take simple, even everyday observations, and seek to further their understanding. Most of our understanding about science has come from observations that have led to experiments. Observations can include -
BYU CHEM 105
STANDARD DEVIATION Standard deviation is a way of measuring how much variation there is in a set of data. Variation is an expected part of biology. With any set of values, it is unreasonable to expect that all the numbers will be equal: there will most of -
BYU CHEM 105
STANDARD ERROR OF THE MEAN (COMPARING RESULTS FROM DIFFERENT EXPERIMENTAL CONDITIONS) Standard error of the mean allows comparisons to be made between two or more groups that are not linked. Through standard error of the mean, the experimenter is able to -
BYU CHEM 105
SUMMARY STATISTICS Tables, graphs, and other visual depictions of information are very helpful in quickly understanding experimental results. In addition to these methods, there is one important method of portraying information that we will look at in mor -
BYU CHEM 105
SUMMARY STATISTICS Tables, graphs, and other visual depictions of information are very helpful in quickly understanding experimental results. In addition to these methods, there is one important method of portraying information that we will look at in mor -
BYU CHEM 105
Chapter 9: Molecular Geometry and Bonding Theory Lewis structures help us understand the number and types of bonds between atoms, but they do not show us the . Example: CCl4 VSEPR: Electrons will get out of each others way as much as possible. 1. How many -
BYU CHEM 105
Chapter 10: Gases In this chapter we will examine the physical properties of gases and consider how we can understand these properties in terms of the behavior of gas molecules. Examples: temperature volume pressure moles 1. Identify 3 characteristics of -
BYU CHEM 105
Chapter 25: Introduction to Organic Chemistry Naming just takes PRACTICE, PRACTICE, and MORE PRACTICE. So thats what well do for this chapter! ALKANES ALDEHYDE ALKENES KETONE ALKYNES CARBOXYLIC ACID ALCOHOLS ESTER ETHERS AMINE AMIDE Now well practice wit
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