Physics 1 Problem Solutions 169

Physics 1 Problem Solutions 169 - Chapt. 20 Thermodynamics...

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Chapt. 20 Thermodynamics II: Microscopic View 165 020 qmult 00220 1 1 3 easy memory: real gases condense Extra keywords: physci KB-131-17 5. At absolute zero, a true ideal gas would have zero pressure or zero volume or both. This is not true for a real gas since any real gas would when temperature went too low. a) boil b) evaporate c) condense d) duplicate e) sigh 020 qmult 00300 1 3 5 easy math: Avogadro’s number 6. Say you have A grams of some element whose elemental atomic mass is A : mass in macroscopic units is Am a , where m a = 1 . 6605 × 10 24 g is the atomic mass unit. How many atoms do you have? a) 6 . 02 × 10 23 or 2 moles. b) 1 . 6605 × 10 24 or 2 moles. c) 6 . 02 × 10 23 or 3 moles. d) 1 . 6605 × 10 24 or 1 mole. e) 6 . 02 × 10 23 or 1 mole. 020 qmult 00310 1 4 5 easy deducto-memory: moles keyword 7. “Let’s play Jeopardy ! For $100, the answer is: 10 g of HF, where hydrogen has atomic mass 1 and and ±uorine has atomic mass 19.” a) What is hydrochloric acid, Alex? b) What is one mole of HF molecules, Alex?
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This note was uploaded on 11/16/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.

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