Midterm 1 - Midterm 1 (evens) exam no._ Do not write on...

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Midterm 1 (evens) exam no.______ Do not write on this exam 1. 25,748 in scientific notation is A. 25.748 x 10 3 B. 2.5748 x 10 4 C. 2.5748 x 10 -4 D. 25.748 x 10 -3 E. none of the above 2. Which of the following quantities is/are expressed in three significant figures? i. 8.970 x 10 2 tons ii. 0.012 mL iii. 0.005 g iv. 5.1200 ft 3 A. i and iv B. ii and iii C. iv only D. All are expressed in three significant figures E . None is expressed in three significant figures 3. The (imaginary) element naomium typically forms a -2 anion. In which group on the periodic table would you expect to find naomium? A. IIA B. IIIA C. VIA D. VIIA E. IIB 4. Which of these ions is isoelectronic with neon? A. N -3 B. F + C. C +4 D. Ar E. O 2 -2 5. Convert 12.0 liters to gallons. (1 liter = 1.056 qt, 1 gallon = 4 qt) A. 45.42 gal B. 45.5 gal C. 50.7 gal D. 2.84 gal E. 3.17 gal 6. Given 1 atm = 760 torr, what is 963.2 torr in atm? A. 0.7890 atm B. 7.32 x 10 5 atm C. 7.320 x 10 5 atm D. 1.2674 atm E. 1.267 atm
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7. (3.00 x 10 2 )(5.0 x 10 3 ) is equal to A. 2 x 10 6 B. 1.500 x 10 6 C. 1.50 x 10 6 D. 1.5 x 10 6 E. none of the above 8. How many centimeters are there in one kilometer? A. 10 5 cm B. 10 2 cm C. 10 1 cm D. 10 -2 cm E. 10 -5 cm 9. In the periodic table the halogens are in group(s) A. IA B. IIA C. VIIA D. VIIIA E. I - VIIB 10. A bond formed when two atoms share two electrons is a ______ bond; it is best described as _____. A. double; covalent B. double; ionic C. single; covalent D. single; ionic E. triple ; covalent 11. An atom with Z=26 and A=58 contains how many protons, electrons, and neutrons? A. 26; 26; 58 B. 58; 26; 26 C. 26; 32; 84 D. 32; 26; 32 E. 26; 26; 32 12. Which of the following elements has this Lewis dot structure? A. Cl B. K C. C D. Ne E. Mn
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13. The bonding in NaF A. is ionic B. is covalent C. involves the transfer of electrons from the fluorine to the sodium D. both A and C E. none of the above 14. The electron configuration for nitrogen is: A. ls 2 2s 2 2p 6 3s 2 B. ls 2 2s 2 2p 3 C. ls 2 2s 2 3p 3 D. ls 2 2s 2 2p 6 3s 2 3p 6 3d 8 4s 2 E. 2s 2 2p 3 15. What is the ground state electron configuration of arsenic (As)? A. [Ar]4p
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This note was uploaded on 03/08/2011 for the course CHE 041C taught by Professor Staff during the Fall '09 term at UC Davis.

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Midterm 1 - Midterm 1 (evens) exam no._ Do not write on...

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