1- The electron geometry of carbon dioxide is . . 2- The bond angle of methane with tetrahedral electron geometry is 3. Carbon forms.. bonds with a large number of other elements. 4 Hybridization for ethyne is . . 5- Acetylene has . sigma bonds and .. pi bonds.
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- Q2. Complete the table below with a tick to show which of the following statements describe the molecules. (A.C.1.1, 1.2) Statement Alpha glucose Amino acid Fatty acid Nucleotide A hexose sugar Insoluble in water Formed by condensation reactions Contain the elements, C, H and O Contains the element, N |Has a carboxyl group, -COOH Forms polypeptidesQ5. What is so special about C-H bonds? A. They represent a high entropy form of energy. B. They are strongly electronegative and are easily reduced. C. They are the source of readily accessible electrons that are found in food. D. They are an important bonding arrangement ensuring the proper quaternary structure of proteins.Q4. Thinking of the individual charges of the metal and polyatomic ions present in Ca5(PO4)30H, can you explain why this compound is neutral? Show the working of how the charges balance each other out. (3)
- A Chem Quiz 2 [12 Items] 2 3 6 7 11-12 PN> All Items 1. 4 8 9 10 6. Vitamin B12, also known as cobalamin, has the following chemical formula: C63H88CON14014P What makes vitamin B12 an organic compound? A. Vitamin B12 contains a significant amount of carbon. В. Vitamin B12 contains oxygen, which is needed by all living organisms. С. Vitamin B12 cannot be separated into different elements. D. Vitamin B12 does not contain sulfur, which is only found in inorganic substances. Time Remaining: 00:23:43adenine molecule ii. NH2 N- НО-Р—О—Р—О—Р—О. ОН ОН ОН i. Phosphate chain ОН ОН iii ribose sugar>> emistry_101 June%202019%20(1).pdf Chemical Bonding (.. Quantum Numbers... 2.2: Atomic Orbitals... E: Chemical Equili.. Chapter 15.3: Solvin... 100% 12/14 Biomolecule category Important feature 7(a) OH SH NH2 7(b) HO OH HO HO. HO ОН ОН 7(c) 7(d) NH2 OH O=P- N° HO HO OH
- INTERPARTICLE FORCES 123 17. Despite both being nonpolar hydrocarbons, why is ethane a gas a room temperature when heptano is a liquid? (A) Ethane has more sigma bonds to reinforce the carbon chain. (B) Heptane's longer chain has a larger electron cloud and more surface area available for instantaneous attractions than ethane. (C) Heptane's longer chain with more C-H bonds has more opportunities for hydrogen bonding to form than ethane. (D) Heptane has a carbon chain that is further apart making it less stable. 18. Which of the following would be expected to have the lowest vapor pressure at 25°C? (A) N2 (B) Cl, (С) Brz (D) 2 boludite od net 19. In which of the following pairs of substances is the substance with the higher expected melting point listed first? (A) KCl or NaCl (B) Mg or AI (C) Ba or Cs (D) Ar or Kr 1o ianoo letevgo o qu sler isrdi aleioq soitel ad HOo ltecio a nl AS 20. Which of the substances below would be expected to have the lowest boiling point at 1 atm pressure?…The chemical activity of an atom: a. depends on the electrons in the outermost energy level. b. is increased when the outermost energy level is filled withelectrons. c. depends on its 1s but not its 2s or 2p orbitals. d. is increased when valence electrons completely fill the outerorbitals. e. of oxygen prevents it from sharing its electrons with otheratoms.Which of the following comparisons or contrasts between endergonic and exergonic reactions is false? Endergonic reactions have a positive ?G and exergonic reactions have a negative ?G Endergonic reactions consume energy and exergonic reactions release energy Both endergonic and exergonic reactions require a small amount of energy to overcome an activation barrier Endergonic reactions take place slowly and exergonic reactions take place quickly.
- Which of the following is the best way to judge the relative activation energies between two given chemical reactions? Compare the ?G values between the two reactions Compare their reaction rates Compare their ideal environmental conditions Compare the spontaneity between the two reactions.A hydrogen bond is: a. a strong attraction between hydrogen and another atom. b. a bond between a hydrogen atom already covalently bound to one atom and made partially negative by unequal electron sharing with another atom. c. a bond between a hydrogen atom already covalently bound to one atom and made partially positive by unequal electron sharing with another atom. d. weaker than van der Waals forces. e. exemplified by the two hydrogens covalently bound to oxygen in the water molecule.9 draw an isomer of the triglyceride in sunflower seed oil. Show the reaction and write out the products when this triglyceride is hydrogenated.
