Midterm 2 practice

# Midterm 2 practice - 1 of 14 Name Student ID Number Lab TA Name and Time Practice Second Midquarter Exam Note that this practice exam is much

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1 of 14 Chem 2A practice Midquarter II Professor McCurdy Name______________________________________________________ Student ID Number __________________________________________ Lab: TA Name and Time ______________________________________ Practice Second Midquarter Exam: Note that this practice exam is much longer than a real exam, but covers most kinds of questions on the material in all of chapters 6, 8, and 9 of the 9 th edition of the text

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2 of 14 Chem 2A practice Midquarter II Professor McCurdy I. Multiple Choice: ( clearly circle the letter of the correct answer) 1. Standard conditions of temperature and pressure (STP) are a) 100 o C, 1 atm. b) 25 o C, 760 mm Hg c) 0 K, 760 mm Hg d) 0 o C, 760 mm Hg e) none of these 2. Boyles law, known since 1662, is (where a is a constant) a) V = a T and constant P b) P = a/V at constant T c) V = a n Avogrado at constant T and P d) PV=nRT e) none of these 3. In an ideal mixture of gases, the partial pressures, P a , of each of the constituent gases a) are each equal to n a RT/V where n a = number of moles of that gas b) are each equal to n RT/V where n = total number of moles c) are each equal to n RT/V a where V a = partial volume for that gas d) satisfy P a V a = n a RT e) none of these 4. Recalling the relation M RT u rms 3 = from the kinetic theory of gases (you may not be given this equation on the real exam), what is the rms spead of H 2 at 25 0 C? a) 1.92 x 10 3 cm/s b) 0.96 x 10 3 cm/s c) 0.96 x 10 3 m/s d) 1.92 x 10 3 m/s e) none of the above
3 of 14 Chem 2A practice Midquarter II Professor McCurdy 5. The de Broglie relation, ! / h p = connects which properties? a) The wavelength of light absorbed and the momentum of a particle b) The frequency and wavelength of light c) The wavelength and the momentum of any particle d) The frequency and the momentum of a photon e) none of these 6. The energy of the nth state of a hydrogen-like atom is ( = H R Rydberg constant) 2 2 / n Z R E H n ! = (You may not be given this equation on the real exam.) How much energy is required to ionize the hydrogen atom in its ground state? a)

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## This note was uploaded on 04/23/2008 for the course CHEM 2A taught by Professor Guo during the Fall '08 term at UC Davis.

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Midterm 2 practice - 1 of 14 Name Student ID Number Lab TA Name and Time Practice Second Midquarter Exam Note that this practice exam is much

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