Final exam review workshop key

1. Your gas tank holds 18.6 gallons and is one quarter full. Your car gets 16 miles/gal. Will your car run out of gas before you make it to the next gas station which is 73 miles away? No. You have 74.4 miles left in the tank 2. A block occupies 0.3597 ft3 . What is its volume in mm3? 1.02 X 107 mm3 Chapter 1: 3. 4. All of the following are true except: a. ions are formed by adding electrons to a neutral atom. b. ions are formed by changing the number of protons in an atom's nucleus. c. ions are formed by removing electrons from a neutral atom. d. an ion has a positive or negative charge. e. metals tend to form positive ions. Chapter 2: Final exam review workshop key 5. Yellow light can have a wavelength of 576 nm. The energy of a photon of this light is: a. 1.14 × 10–31 J. b. 5.76 × 10–7 J. c. 3.45 × 10–19 J. d. 5.20 × 1014 J. e. 2.90 × 1018 J. 6. When a hydrogen electron makes a transition from n = 3 to n = 1, which of the following statements is true? I. Energy is emitted. II. Energy is absorbed. III. The electron loses energy. IV. The electron gains energy. V. The electron cannot make this transition. a. I, IV b. I, III c. II, III d. II, IV e. V 7. How many electrons in an atom can have the quantum numbers n = 4, l = 2? a. 14 b. 12 c. 5 d. 10 e. 6 8. Which of the following combinations of quantum numbers (n, l, ml, ms) do not represent permissible solutions of the Schrödinger equation for the electron in the hydrogen atom (i.e., which combination of quantum numbers is not allowed)? a. 9, 8, -4, 1/2 b. 8, 2, 2, 1/2 c. 6, -5, -1, 1/2 d. 6, 5, -5, 1/2 e. All are allowed. Chapter 3: 9. Provide a reasonable Lewis structure for C4H9O2N. (Hint: there are 1 C=O bonds and 2 C-O bonds). Which bond in this molecule will be the shortest? Strongest?