Below are the structures of several plant pigments. Rank these from most to least polar. Most polar N H₂C HO H.C CH₂ H₂O- HO HO- ད་ HO OH OH Least polar IZ OCH OH -CH₂
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- In addition to CO, CO2, and C3O2, there is another molecular oxide of carbon, pentacarbon dioxide, C5O2, a yellow solid. (a) What is the approximate C-to-C-to-O bond angle in pentacarbon dioxide? (b) What is the approximate C-to-C-to-C bond angle in this compound?For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name acetic acid dimethyl ether compound hypobromous acid formula or Lewis structure H :0: H-C-C-O-H H H H-C-0-C H H H T HBrO | H Between molecules of the compound? yes O O no O yes no yes hydrogen-bonding force no Between molecules of the compound and molecules of water? O O yes no yes no yes no XRank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure H :O: H | || | H-C-C-C-H H | | H Ar | | H H Ag H H | | H-C-C-C-O-H 1 H | H boiling point (Choose one) (Choose one) (Choose one) X (Choose one 1 (highest) 2 3 4 (lowest) 5
- Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C chemical symbol, chemical formula or Lewis structure :0: || H-C-H Co H₂ H-C-H || H-C-H boiling point (Choose one) (Choose one) (Choose one) ✓ (Choose one) X Ś V 0 ERank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B 0 D H chemical symbol, chemical formula or Lewis structure NO :O: H C-C-H I H :0: || H-C-N-H ZIH Н boiling point (Choose one) (Choose one) ✓ (Choose one) ✓ (Choose one) ✓ X GRank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance chemical symbol, chemical formula or Lewis structure B H:0: | || H-C-C-N- CH3 Br CaBr, H CH3 C H :0: H I IN H-C-C-C-H | | | D H H H CH₂- N― CH3 I CH3 boiling point (Choose one) v (Choose one) v (Choose one) (Choose one) ? Π ་ 00.
- You are given part of a molecule shown below. Assume that the two atoms are covalently bound to each other and to a larger molecule at the first dash symbol. Can the atom that is underlined (as shown) participate in a hydrogen bond with another atom from a different molecule? −O−H −C−H −N−H −O−H −C−H Can the oxygen of -O-H participate in a hydrogen bond? Can the hydrogen of -C-H participate in a hydrogen bond? Can the nitrogen of -N-H participate in a hydrogen bond? Can the hydrogen of O-H participate in a hydrogen bond? Can the carbon of -C-H participate in a hydrogen bond?Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure N₁₂ :0: || H-CN-H NO :0: | H H H-C-C-H I H boiling point (Choose one) (Choose one) (Choose one) (Choose one)from lowest to highest, 4 being the lowest
- The structural formula for ethane is (a) What is the molecular formula for ethane?(b) What is its empirical formula?(c) Can we infer from this drawing that the H—C—H bond angles are 90 degrees?Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance B C O chemical symbol, chemical formula or Lewis structure H I H :O: H ||| H-CICIC-H ||| HHH CaBc₂ CH, -N-CH, I CH, H 10: H-C-C-N-CH, Bri CH, boiling point (Choose one) (Choose one) (Choose one) (Choose one)The hydrocarbon cyclobutane, C4H8, is represented above. At high temperatures, cyclobutane quickly decomposes into ethene, C2H4. (see attached image) (a) Draw a Lewis electron-dot diagram of the ethene molecule in the following box, and estimate the value of the H−C−H bond angle in ethene.
