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chemistry homework - 4 OH l NH 4 ClO 4(s H 2 O l H(aq ClO...

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Nick Buttler 9-31-07 seat 2 Ch. 4 52. Write the chemical formula for each of the following compounds: (a) copper(II) chlorate, (b) potassium nitrate, (c) barium phosphate, (d) copper(I) sulfate, (e) sodium sulfite. a. Cu2+ + ClO3- = Cu 3 (ClO 3 ) 2 b. K+ + NO3- = KNO 3 c. Ba3+ + PO43- = BaPO 4 d. Cu+ + SO42- = Cu 2 SO 4 e. Na+ + SO32- = Na 2 SO 3 70. Determine which of the following are oxidation-reduction reactions. For those that are, identify the oxidizing and reducing agents. a. HgCl 2 (aq) + 2KI(aq) HgI 2 (s) + 2KCl(aq) 2 -1 1 -1 2 -1 1 -1 not redox b. 4NH 3 (g) + 3O 2 (g) 2N 2 (g) + 6H 2 O(g) -3 1 0 0 1 -2 redox oxidizing agent = nitrogen reducing agent = oxygen c. CaCO 3 (s) + 2HNO 3 (aq) Ca(NO 3 ) 2 (aq) + CO 2 (g) + H 2 0( l ) 2 4 -2 1 5 -2 2 5 -2 4 -2 1 -2 not redox d. PCl 3 ( l ) + 3H 2 O( l ) 3HCl(aq) + H 3 PO 3 (aq) 3 -1 1 -2 1 -1 1 3 -2 not redox 95c. perchloric acid + aqueous ammonia HClO 4 (aq) + NH
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Unformatted text preview: 4 OH( l ) NH 4 ClO 4 (s) + H 2 O( l ) H + (aq) + ClO 4-(aq) + NH 4 + (aq) + OH-(aq) NH 4 ClO 4 (s) + H 2 O( l) Ch. 5 8. he expected them to all go through because he didn’t know atoms had nuclei 9. he discovered that each element has one more proton than the one before 10. V = (4/3)π r = (4/3)π(0.0529) = 0.2216 nm = (4/3)π(1.5 * 10-15 ) = 6.28 * 10-15 nm 3.53 * 10 13 19. Kind of Atom Atomic Number Mass Number Isotope Number of Protons Number of Electrons Number of Neutrons Neon 10 21 21 Ne 10 10 11 Potassium 19 39 39 K 19 19 20 Silicon 14 28 28 Si 14 14 14 Mercury 80 202 202 Hg 80 80 122 40. Calculate the frequency of radiation of each of the following wavelengths: a. 8973 Å (8973)nu = 186,000 nu = 20.7 s-1 b. 442 nm (442)nu = 186,000 nu = 421 s-1...
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chemistry homework - 4 OH l NH 4 ClO 4(s H 2 O l H(aq ClO...

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