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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 5/17/2013 11:03:05 AM
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Which of the following diatomic molecules is joined by a double covalent bond? a. O2 c. N2 b. Cl2 d. He2
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Updated 10/14/2014 4:31:00 PM
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O2 (oxygen) is the diatomic molecule that is joined by a double covalent bond

Added 10/14/2014 4:30:58 PM
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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 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 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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