Exam 2 F 11 Form Code A DRC

Exam 2 F 11 Form Code A DRC - CHM 2045 Exam 2 CH 7 8 9 10...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHM 2045 Exam 2 CH 7, 8, 9, 10, and 11 (Gower/Mitchell/Williams) (Form Code A) Fall 2011 Instructions: This exam contains 25 questions worth 10 points each. On your Scantron sheet enter and bubble in your name, UF ID number (start on the leftmost space and leave any extra spaces blank), and Form Code (see above). You may retain your exam sheet (mark your answers on it and the Scantron sheet) and any other sheets. Turn in only your Scantron. Check your bubbling carefully – deductions for bubbling errors will not be negotiated. Potentially Useful Information: R = 1.097x10 7 m –1 R·h·c = 2.18x10 –18 J 1. The visible part of the hydrogen atom spectrum is called the Balmer series (n 1 = 2). The violet line has a wavelength of 410.2 nm. What is the initial energy level (n 2 ) of the electron for this transition? (1) 1 (2) 2 (3) 3 (4) 4 (5) 6 2. Which of the following statements is true? (1) According to the Bohr model, an atomic spectrum consists of separate lines because an atom has certain allowed orientations in space. (2) Quantum numbers n, l, and m l are important in determining the size, shape, and orientation, respectively, of an atomic orbital. (3) The Pauli Exclusion Principle states that no two electrons in neighboring atoms can have the same set of four quantum numbers. (4) The Heisenberg Uncertainty Principle states that it is impossible to determine accurately both the momentum and the energy of a particle simltaneously. (5) According to Hund's Rule, a ground-state [Ne]4s 2 3 p 2 electron configuration has two paired electrons with opposite spins in the same 3 p orbital. 3. A microwave oven operating at 1.72 x 10 3 μm is used to heat 243. g of water from 25°C to 90°C. How many of these photons must be absorbed ? (Specific heat capacity of water = 4.184 J/g•°C) (1) 3.1 x 10 28 (2) 3.1 x 10
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/28/2011 for the course CHEM 2045 taught by Professor Gower during the Fall '11 term at University of Florida.

Page1 / 2

Exam 2 F 11 Form Code A DRC - CHM 2045 Exam 2 CH 7 8 9 10...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online