key3(1) - CHEM 1211K Test III MULTIPLE CHOICE. (3 point...

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CHEM 1211K Test III MULTIPLE CHOICE. (3 point each) 1) The temperature of a 15-g sample of lead metal increases from 22 o C to 37 o C upon the addition of 29.0 J of heat. The specific heat capacity of the lead is ________ J/g-K. A) 1.9 B) 7.8 C) -29 D) 29 E) 0.13 2) Calculate H o (in kJ) for the following reaction: 2SO 2 (g) + O 2 (g) 2SO 3 (g) using the two reactions listed below: 2S (s) + 3O 2 (g) 2SO 3 (g) H = -790 kJ S (s) + O 2 (g) SO 2 (g) H = -297 kJ A) -196 B) 1087 C) -543 D) -1384 E) 196 3) Given the data in the table below, what is the H o rxn for the following reaction 2Ag 2 S (s) + O 2 (g) 2Ag 2 O (s) + 2S (s) Substance H o f (kJ/mol) Ag 2 S -32.6 O 2 0.0 Ag 2 O -31.0 S 0.0 A) -1.6 B) +3.2 C) +1.6 D) -3.2 E) none of these. 4) The photoelectric effect is __________. A) the darkening of photographic film when exposed to an electric field B) the total reflection of light by metals giving them their typical luster C) the ejection of electrons by a metal when struck by light D) a relativistic effect E) the production of current by silicon solar cells when exposed to sunlight 5) The lines in the emission spectrum of hydrogen result from __________. A) electrons given off by hydrogen as it cools B) energy given off in the form of visible light when an electron moves from a higher energy state to a lower energy state C) decomposing hydrogen atoms D) protons given off when hydrogen burns
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key3(1) - CHEM 1211K Test III MULTIPLE CHOICE. (3 point...

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