CHEM 1110 Final: CHEM 1110 KPU 110021Final Exam 1271
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Instructions: show all calculations in order to receive any credit, a periodic table will be given to you, rough work should be done on the back of the pages, be sure this exam paper has 10 pages. Planck"s constant = h = 6. 62 x 10-34 joule-s speed of light = c = 3. 0 x 108 m/s. 2- (5) a sample of solid [(nh4)2fe(so4)2 xh2o] of mass 5. 882 g was dissolved in water and oxidized completely by reacting with exactly 25. 00 ml of 0. 1000 m k2cr2o7 according to the balanced net ionic equation shown below: . xh2o]. (2) a 1. 520 g sample of a nitrogen oxide was found to contain 0. 463 g of nitrogen. The empirical formula for this oxide of nitrogen is: (a) n2o (e) n2o5 (c) n2o3 (d) no2 (b) no (2) 12. 21 g of an unknown gas is sealed in a 1. 0 l flask at 97 c and 3. 75 atm.
