Chem1035 Practice Final Exam

Chem1035 Practice Final Exam - Chemistry 1035 Final Exam...

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Chemistry 1035 Final Exam December 9, 2005 THIS IS FORM A Name_________________________ R = 0.0821 L·atm/mol·K or 8.314 x 10 -3 kJ/mol Avogadro’s number: 6.02 x 10 23 particles/mol c = 3.00 x 10 8 m/s h = 6.63 x 10 -34 J·s Select the single best answer to each question. 1. Express 15.0 m 3 as liters. (1 mL = 1 cm 3 ) 1. 1.50 L 2. 1.50 x 10 4 L 3. 150 L 4. 1.50 x 10 3 L 2. How many significant figures does the sum of the following contain? 8.5201 + 1.93 1. 1. 2. 2 3. 3 4. 4 5. 5 3. Bromine, a red liquid, has a density of 3.12 g/mL. What is the volume occupied by 25.0 g of bromine? 1. 2.48 mL 2. 78.0 mL 3. 17.4 mL 4. 8.01 mL 4. Which of the following names and formulas do not match? 1. N 2 O 4 dinitrogen tetroxide 2. MnCO 3 manganese (II) carbide 3. HBrO 3 bromic acid 4. NaNO 2 sodium nitrite 5. An oxide ion has ___________ electrons. 1. 6 2. 8 3. 9 4. 10 5. 12
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6. The formula for copper (II) phosphate is 1. Cu 3 P 2 2. Cu 2 PO 3 3. Cu 3 (PO 4 ) 2 4. Cu 2 (PO 4 ) 3 7. Which group of three elements contains an alkali metal, a noble gas and a metalloid? 1. Rb, Ne, Ag 2. K, Kr, As 3. Mg, Ar, Pb 4. Sr, He, Si 8. What mass of Si is in 22.5 g of silicon tetrachloride? 1. 3.72 g 2. 4.35 g 3. 4.17 g 4. 6.12 g 9. Calculate the amount of oxygen produced when 112 g of KNO 3 reacts according to the following equation: KNO 3 (s) K 2 O(s) + N 2 (g) + O 2 (g) 1. 44.4 g 2. 35.0 g 3. 22.0 g 4. 54.0 g 10. How many grams of Ca(OH) 2 are needed to react completely with 75.0 mL of 0.415 M HNO 3 ? The molar mass of Ca(OH) 2 is 74.0 g/mol. Ca(OH) 2 (s) + 2HNO 3 (aq) Ca(NO 3 ) 2 (aq) + 2H 2 O( l ) 1. 1.15 g 2. 3.12 g 3. 2.30 g 4. 0.776 g 11. What is the number of phosphorus atoms in 5.00 g of P 4 O 6 ? 1. 1.37 x 10 22 atoms 2. 1.20 x 10 25 atoms 3. 2.41 x 10 24 atoms 4. 5.47 x 10 22 atoms 12. Calculate the mass of FeCl 3 ( 162 g/mol) needed to make 150. mL of a 0.675 M solution of FeCl 3 . 1. 10.1 g 2. 16.4 g 3. 22.2 g 4. 7.83 g
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13. Which solution has the highest total concentration of ions? 1. 0.10 M NH 4 Cl 2. 0.10 M BaCl 2 3. 0.10 M KNO 3 4. 0.10 M CH 3 OH 14. What are the spectator ions in the following reaction? BaCl 2 (aq) + FeSO 4 (aq) 1. Ba 2+ , SO 4 2- 2. Fe 2+ , Cl - 3. Ba 2+ , Cl - 4. Fe 2+ , SO 4 2- 15. Which one of the following pairs of aqueous solutions will not produce a precipitate?
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Chem1035 Practice Final Exam - Chemistry 1035 Final Exam...

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