1100finalF2004DG - Fundamentals of Chemistry CHEM 1100...

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Unformatted text preview: Fundamentals of Chemistry CHEM 1100 Final Exam Fall 2004 Name: ______________________________________ 1. At room temperature which of the following is a gas? a. phosphorous b. iodine c. cesium d. chlorine 2. An alkaline earth metal, a halogen, and a metalloid in that order are a. Ni, N, Sn b. Sc, Si, Sb c. Cr, Cl, As d. Na, Cl, Se e. Ca, Cl, Sb 3. Cesium belongs to the _______ group of the periodic table. a. alkali metal b. alkaline earth c. halogens d. noble gases 4. Which of the following pairs have the same number of electrons? a. Cu 2+ and Cu + b. Ca 2+ and Mg 2+ c. F 1- and O 2- d. H 1+ and H 1- 5. Which statement is incorrect? a. The nucleus of an atom is dense, heavy and positively charged. b. According to Dalton's theory, an atom has a nucleus in the center and electrons in surrounding. c. All measurements that lead to accurate results may not be scientifically acceptable. d. Allotropes are same elements with similar physical properties 6. Consider the chemical equation below. When this equation is properly balanced the value of ( w + x + y + z ) is w C 6 H 12 + x O 2 y CO 2 + z H 2 O a. 22 b. 16 c. 21 d. 19 e. 33 7. A piece of metal ore weighs 8.25 g. When a student places it into a container of water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore? a. 0.312 g/mL b. 0.633 g/mL c. 1.58 g/mL d. 3.21 g/mL 8. In a molecule of ammonium hydrogen sulfate the number of N, H, S, O are, respectively, a. 2,9,1,4 b. 1,5,1,4 c. 2,10,1,3 d. 1,6,1,4 9. Which compound contains the highest percent by mass of hydrogen? a. HCl b. H 2 O c. H 2 SO 4 d. H 2 S 10. Which statement is wrong about 0.50 mole of CH 3 CH 2 COOCH 3 ? a. It has 3.0 x 10 23 molecules. b. It has 4.2 x 10 24 atoms. c. It has 7 moles of atoms. d. It has 3.0 x 10 23 atoms. 11. Fe + O 2 Fe 2 O 3 The number of moles of Iron which will react with 1.2 mol of oxygen to produce iron(III) oxide is a. 1.2 mol b. 1.6 mol c. 2.2 mol d. 2.4 mol 12. To obtain 5.66 x 10 21 atoms of nickel, you would weigh a. 0.552 g....
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This note was uploaded on 04/24/2008 for the course CHEM 6A taught by Professor Pomeroy during the Fall '08 term at UCSD.

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1100finalF2004DG - Fundamentals of Chemistry CHEM 1100...

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