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AB Calculus Exam Review Solutions

CA 2_FUNDA (PART 2)

CA 2_Funda (PART 1)

Unit 1 AP Precalculus

CA 2_Funda (TFN)

AP Calc AB Unit 8 - Area Formulas from Geometry

Calc- Motion

LSD ca 6 HL

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Eksponenter og røtter

Cactus

AP Calculus BC Review Flashcards

CAD/Angina/Acute Coronary Syndrome/AMI/HF/Inflammatory heart disease

Decoding LEQ and DBQ Prompts Meaning

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 43. The F-N-F bond angle in the NF3 molecule is slightly less than ___________. A) 90˚ B) 109.5 ˚ C) 120˚ D) 180˚ 44. The angles between sp2 orbitals are _____________. A) 90˚ B) 109.5˚ C) 120˚ D) 180˚ 45. The blending of one s atomic orbital and two p atomic orbitals produces __________. A) three sp hybrid orbitals B) three sp2 hybrid orbitals C) three sp3 hybrid orbitals D) two sp3 hybrid orbitals 46. The π bond in ethylene, CH2CH2, results from the overlap of ___________. A) sp3 hybrid orbitals B) s atomic orbitals C) sp2 hybrid orbitals D) p atomic orbitals 47. The amount of gas that occupies 60.82 L at 31˚ C and 367 mm Hg is _________ mol. A) 1.18 B) 0.850 C) 894 D) 11.6 48. The specific heat of lead is 0.13 J/g-K. How much heat (in J) is required to raise the temperature of 15 g of lead from 22 ˚C to 37 ˚C? A) 7.8 B) 1.9 C) 19 D) 29 49. Which one of the following is a weak acid? A) HNO3 B) HI C) HF D) HClO4 50. Which combination will produce a precipitate? A) NH4OH (aq) and HCl (aq) B) AgNO3 (aq) and Ca(C2H3O2)2 (aq) C) NaCl(aq) and HC2H3O2 (aq) D) NaOH (aq) and Fe(NO3)2 (aq) 51. The density of chlorine (Cl2) gas at 25 ˚C and 450 torr is _______ g/L. A) 20 B) 4.9 C) 1.7 D) 0.86

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 27. What volume (mL) of 0.135 M NaOH is required to neutralize 13.7 mL of 0.129 M HCl? A) 13.1 B) 0.24 C) 14.3 D) 6.55 28. All of the orbitals in a given electron shell have the same value of the ___________ quantum number. A) principal B) azimuthal C) magnetic D) spin 29. The places where the value of Y2 is zero are called ___________. A) orbitals B) nodes C) orbits D) wave functions 30. Of the following elements, which has the largest first ionization energy? A) B B) N C) P D) Si 31. Which equation correctly represents the second ionization of phosphorous? A) P+(g) + e- à P2+(g) B) P(g) à P+(g) + e- C) P+(g) à P2+(g) + e- D) P-(g) + e- à P2-(g) 32. Which of the following does not have eight valence electrons? A) Rb+ B) Ca+ C) Xe D) Br- 33. Of the atoms below, ____________ is the least electronegative. A) Cl B) Si C) F D) Rb 34. Of the bonds below, __________ is the least polar. A) Na - S B) P - S C) Na - Cl D) Si - Cl 35. In the Lewis structure of ClF, the formal charge on Cl is ______ and the formal charge on F is ________. A) –1, -1 B) 0, -1 C) 0, 0 D) +1, -1

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 5. Which of the following molecular formulas is also an empirical formula? A) C6H6O2 B) C2H6SO C) H2O2 D) C6H6 6. What is the coefficient of O2 when the following equation is completed and balanced? C4H8O2 + O2 à ______________ A) 2 B) 3 C) 5 D) 6 7. Analysis of a compound shows that it contains 3.75 moles of C, 7.50 moles of H, and 1.25 moles of N. What is its empirical formula? A) CHN B) C3H6N C) C4H8N D) C5H9N2 8. What is the molar mass of Ca(NO3)2? (AW Ca = 40.1 amu; N = 14.0 amu; O = 16.0 amu) A) 70.1 g/mol B) 62.0 g/mol C) 164.1 g/mol D) 102.1 g/mol 9. Which of the following is an alkali metal? A) Mg B) Fe C) Al D) Na 10. A compound contains 40.0% C, 6.71% H, and 53.29% O by mass. The molecular weight of the compound is 60.05 amu. The molecular formula of this compound is A) C2H4O2 B) CH2O C) C2H3O4 D) C2H2O4 11. How many molecules of water, H2O, are there in 28.0 grams of water? A) 9.37 x 1023 B) 1.56 C) 578 D) 1.56 x 1025 12. When a hydrocarbon burns in air, what component of air reacts? A) nitrogen B) oxygen C) carbon dioxide D) water 13. When the following equation is balanced, the coefficient of Fe3O4 is__________. Al + Fe3O4 à Al2O3 + Fe A) 1 B) 2 C) 3 D) 4

Calculus Flashcards

MATH 223: Exam 1