Which of the following accurately describes the number of aluminum and oxygen atoms in Al203? A 3 atoms of aluminum and 2 atoms of oxygen В 2 atoms of aluminum and 3 atoms of oxygen C atoms of aluminum and 1 atom of oxygen D 1 atom of aluminum and 3 atoms of oxygen
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- What are the predominant Intermolecular forces (Dipole-dipole, London dispersion, Hydrogen bonding etc) for the following molecules: TeCl6 AsBr5 XeF4 SiCl4At pH=2.2, which of the following is true COOH Ç00 COO ÇO0 H3N-CH H,N-CH H,N-CH H2N-CH CH2 CH2 CH CH2 pK1 CH2 pKr CH2 pK, CH2 CH COOH СООН CO COO 1. II IV O50 % of carboxylic acid group in the side chain is ionized O Most of the molecules are in the form II C None 50% of carboxylic acid group attached to alpha carbon is ionized 50% of amino group is ionizedblank 1 hydorgen or disulfide or covalent or ionic blank 2 heme nitrogen or O2 or distal histidine or promixmla histidine or heme iron blank 3 hydorgen or disulfide or covalent or ionic blank 4 heme nitrogen or O2 or distal histidine or promixmla histidine or heme iron
- Calculate the ratio [CH3COOH]/[N2CH3COO] that gives a solution with pH = 5.00? * 0.28 0.36 0.44 0.56 0.63Which of the following equations is correct? options: FAD+ + 2 electrons à FADH2 FAD + 2 electrons à FADH2 FAD+ + 2 electrons + 2 protons à FADH2 FAD + 2 electrons + 2 protons à FADH2Which of the following explains why methyl anion has a pyramidal geometry while methyl cation is planar? The HOMO energy decreases upon pyramidalization of the anion but increases for the cation Hyperconjugation stabilizes the planar cation Selected Steric repulsion between the H atoms disfavors the pyramidal anion All of the orbitals for the pyramidal structure are lower energy
- What is the approximate net charge of the molecule shown below at pH 7? 0-2 pk₂=4.0-> O-1 +1 gli 00 HO. - - pk₂=2.8 OH NH3pK₂=9.0What are the formal charges present in in the ion CH3NH3+? Assume all atoms other an hydrogen have an octet and that there are two central atoms. N is +1 and C is 0 N is +1 and C is -1 N is 0 and C is 0 N is +2 and C is -1 N is 0 and C is +1In 6O2 how many oxygen (O) atoms are present
- You have an aqueous solution of hemoglobin (pl = 6.8) at pH 5.2, and currently the proteins are soluble. If you had 1M HCl and 1M NaOH at your disposal, what could you do to precipitate the albumin out of solution? add NaOH to the solution O add HCl to the solution O add NaOH to the solution, then add equal volume of HCl to the solution O add HCl to the solution, then add equal volume of NaOH to the solutionWhich of the following has a phosphoanhydride bond? Select all that apply. n A of of най OH OH о B Ш n A NH E B но- OH OH OH D SH C новови зазд CH3 Н ОН H₂N HO-P-O-P-O-P-OH OH NH₂ ОН ОН SHThe figure shows three oxygen binding curves for hemoglobin in the red blood cells of normal blood, pH 7.6. The middle-dashed line is the standard line for human hemoglobin. Lines A and B represent two experimental conditions your lab partner plotted but forgot to label. 1 0.8 0.6 0.4 0.2 | pO2 Q. which one is the hemoglobin you reduced the concentration of 2,3- bisphosphoglycerate in? and which line is the data from the hemoglobin you changed the pH to 7.3?