1441answertest1

1441answertest1 - 1441 Test One Chapters 1, 2,3, and 4 (...

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1441 Test One Chapters 1, 2,3, and 4 ( Silberberg) 1. E 2. C 3. 35 protons, 35 electrons, 44 protons 4. 6.6 X 10 -3 ( 16.788 – 15.99 = .79 rounds to two sig digs) When adding and subtracting, round to the least number places past the decimal.) 5. B Pure substance = elements and compounds Homogeneous Mixture = Solution 6. (35ms/1) ( 1 s / 1000ms) ( 1 X 10 9 ns / 1 s) = 3.5 X 10 7 ns 7. (22mi/gal) (1 gal/4 qt) ( 1.057 qt/L) ( 1.61 Km / mi) = 9.36 Km/L 8. (a) and (d) 9. (a) sodium oxide (b) carbon dioxide (c) carbon monoxide (d) Iron (III) chloride or ferric chloride (e) magnesium sulfate (f) dinitrogen pentoxide (g) copper (II) nitrate or cupric nitrate ( ic ending means the high oxidation number. ous mean the low oxidation number)(h) Hydrofluoric Acid (i) Nitric Acid (j) Nitrous Acid 10. (46g /1) (1 mole H 2 O / 18g) = 2.6 moles 11. (3.5 moles NaOH/1) ( 40 g NaOH / 1 mole NaOH) = 140 g 12. (60 g CO 2 /1) (1 mole CO 2 / 44 g CO 2 ) ( 6.02 X 10 23 molecules / 1 mole CO 2 ) = 8.2 X 10 23 molecules CO
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This note was uploaded on 10/13/2009 for the course CHEM 1441 taught by Professor Tanizaki during the Spring '08 term at UT Arlington.

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1441answertest1 - 1441 Test One Chapters 1, 2,3, and 4 (...

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