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- (k) (1) Me. an allene CH₂ CO₂Me Ph N₂ a. TsN 3, DBU b. Rh₂(OAC)4 CO₂Me Rh₂(OAC)4Give the product. F O a.. O b.. O c.. O d.. O e.. Of.. Br₂ (2 eq) (b) A Moving to another question will save this response. Br Br p Br Br MacBook Air O (d) Br. Br Br Br Br. Br (e) (f) Br Br1. Molarity of the NaOH solution 0.238 mol/L Trial 1 Trial 2 Trial 2. Volume of H;PO4 added to flask 22.0 mL 22.0 mL 22.0 mL 3. Initial NaOH volume _0.25_ mL _0.75_ mL 0.55 mL 4. Final NaOH volume 17.60_ mL 18.20_ mL _17.90_ mL 5. NAOH volume used for titration to reach green end point mL mL mL 6. NaOH volume used for titration 7. Moles of NaOH used for titration mol mel mel 8. Moles of H;PO4 that reacted mol mel mol 9. Volume of H;PO4 added to flask L 10. Molarity of H3PO4 mol/L mol/L mol/L
- 4. For CH24 Or H;0: a. Which is on top? Why? b. Where does l; and KMNO, dissolve? Why? P Type here to searchI. List all the IMFS that are present in a pure sample of substance A below. The Lewis structure of a molecule is shown. H -C C-H | | H II. Draw one example of substance A acting as a H-bond donor with water. Make sure your H- bond starts and ends in the right places. If the molecule can't act as a H-bond donor, write "not possible." II. Draw one example of substance A acting as a H-bond acceptor with water. Make sure your H-bond starts and ends in the right places. If the molecule can't act as a H-bond acceptor, write "not possible." IV. List all the IMF that are present in a pure sample of substance B below. The Lewis structure of a molecule is shown. H H. C N. H H. H V. Compare substance A and substance B. Which would you expect to have the highest boiling point? Briefly explain why (in about 1 sentence). IIC- :O:For the CO2 impact experiment station: 1) Obtain two plastic cups, red cabbage indicator, a straw, and plastic wrap. 2) Fill each cup approximately one-quarter to one-third full of tap water and add ~10 mL of the red cabbage indicator. 3) Place the two cups side by side on a sheet of white paper. 4) Place the straw into one of the beakers and cover that beaker with the plastic wrap. 5) Carefully blow bubbles into the test cup for 3 min. and observe both cups. 6) Compare the color to the control cup and record any differences. This the Question: Did the beaker with the solution into which CO2 was bubbled change pH/color? By how much? Is this what, you would predict, based on your knowledge of the chemistry of CO2?
- What is the molar fraction of glycine in an aqueous solution whose concentration is 0.140 molkg-1. Data: Mass H2O = 1 kg; M.M. H2O = 18.01 gmol-1.The following data were collected for the reaction 2A + 2B + C 3G+ 4 F Experiment 2 3 4 5 [A] Units of Molarity .00125 .00250 .00125 .00125 .00301 [B] Units of Molarity 00125 .00125 00302 00302 .00100 [C] Units of Molarity 00125 .00125 .00125 00375 .00115 Rate Units M/s 00870 .0174 .0508 .457 a. What is the order with respect to each reactant and what is the overall order for the reaction? Answer this question within the answer box and show your work clearly labeled on the scratch paper. b. Write the rate law for the reaction. Answer this question within the answer box and show your work clearly labeled on the scratch paper. c. What is the value and units for k? Answer this question within the answer box and show your work clearly labeled on the scratch paper. d. Predict the rate for experiment 5, you should give a value and units. Answer this question in the answer box and show your work on the scratch paper labeled clearly.+ → C www-awu. 17.4 Solubility and... esc 18.3 Gibbs Free E... O ACIDS AND BASES Finding the conjugate of an acid or base acid Fill in the missing chemical formulae in the tables below. H₂O* HCO3 HC103 Explanation conjugate base 5.3 Enthalpies of... Check 2 #3 base 3 I Figure 12-8. Molecular Biology of the Cell, 4th Edition. H₂PO4 HPO 18.5 Gibbs Free E... Reading Schedule conjugate acid $ 0 X S MacBook Pro We &
- 1. Amino acids are the building blocks of proteins. The simplest amino acid is glycine, NH2CH2CO2H. There are three forms in equilibrium with one another. +NH3CH2CO2H(aq) + H2O(l)↔+NH3CH2CO2-(aq) + H3O+(aq) Ka = 4.5 x 10-3 +NH3CH2CO2-(aq) + H2O(l)↔ NH2CH2CO2-(aq) + H3O+(aq) Ka = 1.7 x 10-10 If the pH of a natural system (i.e. your body) is 7.2, in what form is the amino acid found? Justify your answer both with rational as well as a quantitative rationale. 2. Sulfanilic acid, which is used in making dyes, is made by reacting aniline with sulfuric acid: H2SO4(aq) + C6H5NH2(aq)→ + H2O(l) a) If you want to prepare 150.0 g of sulfanilic acid, and you expect only an 85% yield, how many milliliters of aniline should you take as a starting material? (ρaniline = 1.02 g/ml) b) Give the approximate values for the following bond angles in sulfanilic acid: A ______B ______ C ______D _______ c)Give the appropriate hybridization for the following atoms in sulfanilic acid:A ______B ______ C ______D…5. Species Y is to be extracted from a 1.00 L aqueous sample using multiple 20.0 mL portions of an extractant (K = 5.1). In order to remove 95% of Y from the sample, what minimum total volume of extractant is required? a) 20.0 mL b) 40.0 mL c) 60.0 mL d) 80.0 mL e) 100.0 mLDetermine the concentration of carbonate ion in water due to solubility limit oflimestone (CaCO3). (Experiment: drop a small piece of limestone in a 1L distilled waterand wait until it reaches its solubility limit controlled by the solubility product). (Problemdiscussed in section 2.7).