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What is the empirical formula of a substance that is 53.5% C, 15.5% H, and 31.1% N by weight? a. CHN c. CH7N b. CHN d. CHN
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Expert answered|zyrilcallyxkyle|Points 15|
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Asked 336 days ago|5/17/2013 11:03:05 AM
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How many pi bonds are formed when sp hybridization occurs in ethene, CH? a. 0 c. 2 b. 1 d. 3
Weegy: Ethene H2C=CH2 Ethene has a double bond between the two carbon atoms. [ A double bond consists of a sigma bond, which is the end-to-end overlap of sp2 hybrid orbitals, and a pi bond, which is the side-to-side overlap of unhybridized p-orbitals. So there is 1 pi bond in ethene. B. 1 ] (More)
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Asked 337 days ago|5/17/2013 7:08:33 AM
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What is the geometric shape of nitrogen molecules and phosphorus molecules having four bonds? a. Trigonal c. Planar b. Tetrahedral d. None of the above
Weegy: Tetrahedral, assuming you mean the shape when a nitrogen or phosphorus atom is bonded to four other. (More)
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Asked 337 days ago|5/17/2013 7:11:33 AM
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shapes adjust so valence-electron pairs are as far apart as possible
Weegy: This is true. Valence electrons on on the outer most shell of an atom. (More)
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Asked 337 days ago|5/17/2013 7:44:37 AM
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Which of the following covalent bonds is the most polar? a. H—F c. H—H b. H—C d. H—N
Weegy: 1. Which bond is most polar? a. H-H |2.20 - 2.20| = 0.00 b. H-C |2.20 - 2.55| = 0.35 c. H-N |2.20 - 3.04| = 0.84 d. H-F |2.20 - 3.98| = 1.78 THE MOST POLAR e. [ H-Cl |2.20 - 3.16| = 0.96 Explanation: Polarity is based on differences in electronegativity. The numbers above are the electronegativity values assigned from Sargent-Welch's periodic table; the values may vary slightly from periodic table to periodic table. The greater the ... (More)
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Asked 337 days ago|5/17/2013 8:06:35 AM
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