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3. 4. 6. 8 6. 10 12 13 14 The acid dissociation constant K of alloxanic acid (HC,H,N,O,) is 2.24 x 10. Calculate the pH of a 3.0M solution of alloxanic acid. Round your answer to 1 decimal place. dla pH = Submit Assignment Continue MacBook Air FI F10 R00

Problem 3. (6.27, From Chang's Book). The calcium ion binds to a certain protein to form a 1:1 complex. The following data were obtained in an experiment: Total Ca2+ (uM) 60 120 180 240 | 480 Ca2+ bound to Protein (uM) 31.2 51.2 63.4 70.8 | 83.4 Determine graphically the dissociation constant of the Ca2+ - protein complex. The protein concentration was kept at 96 uM for each run. (1 pM = 1 x 10- 6 M.)

2.2.1 Gene T X Inbox (9,414 × M Verify your e X My Question x Things I Can x Course Hom x + USC A openvellum.ecollege.com/course.html?courseld=16196689&HepID=aeb74d6324e98a415a0c4c5c32b9c2e6#10001 I Review | Constants | Periodic Table MISSED THIS? Read Section My Courses 16.8 (Pages 701 - 710) ; Watch KCV 16.8, IWE 16.9. Part A Course Home Consider the reaction What will be the equilibrium concentration of CO? Syllabus CO (g) + H2O (g) CO2 (g) + H2 (g) Express the concentration in molarity to two significant figures. K. = 102 at 500 K Scores A reaction mixture initially contains 0.115 M CÓ and 0.115 M H2O. ? Pearson eText [CO] = M Study Area Document Sharing Submit Request Answer User Settings Part B Complete previous part(s) Course Tools > Part C Complete previous part(s) Part D Complete previous part(s) P Pearson Copyright © 2020 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Permissions Contact Us

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LIFE SCIENCES/GRADE 10 MDE/AUGUST 2024 FET SECTION B QUESTION 2 2.1 The diagram below shows part of the nitrogen cycle and the water cycle. B A 2.1.1 Identify the process at A where nitrogen in the atmosphere is converted into a usable form for plants. 2.1.2 in which form is nitrogen absorbed by plants out of the ground at B? (1) (1) 2.1.3 Which part of the water cycle is represented by C. (1) 2.1.4 Runoff water from the farm into the river at D can cause excess nutrients / fertilizers to flow into the water. What is this phenomenon called? (1) 2.1.5 Explain how the process mentioned in QUESTION 2.1.4 above might cause organisms to die in the river. ࿉C (3) (7) COPY RIGHT RESERVED PLEASE TURN OVER

1. Identify the amino acids with the following components in their R group: 1.1. Hydroxyl group 1.2. A sulfur atom 1.3. A second chiral carbon 1.4. An amide group 1.5. An amino group 1.6. A branched side chain 2. Compare and contrast the following pairs: 2.1. Cysteine & Cystine 2.2. Reduced glutathione & Oxidized glutathione 2.3. Lysine & Hydroxylysine 2.4. D-amino acid & L-amino acid .Draw the titration curves of an acidic amino acid, a basic amino acid, and a neutral amino acid ased on their R group. Explain also how titration of amino acids is performed.

Question 4 What is the isoelectric point of the tripeptide gly-ala-cys? pka values are as follows: Gly: 2.3, 9.6 Ala: 2.4, 9.7 Cysteine: 1.7, 8.3 (R group), 10.8 9.0 5.7 10.3 6.6 5.0

4) You are stranded and have two plastic jugs, you decide to burn one of the jugs to to send smoke signals and to keep yourself warm, and you decide to save the other jug to carry and store water. One jug is made out of polyvinyl chloride (PVC) and one is made out of polypropylene (PP). Which jug do you choose to burn and why? Combustion of PVC Combustion of PP AHFPVC = 29.6 kJ/mole C₂H3Cl(g) + O₂(g) → CO₂(g) + H₂O(g) + HCl(g) C3H6(g) + O2(g) → CO₂(g) + H₂O(g) AHFPP = 20.6 kJ/mole

2.2.1 Gene T x m Inbox (9,414 × M Verify your e X My Question x Things I Can x Course Hom x + USC A openvellum.ecollege.com/course.html?courseld=16196689&HepID=aeb74d6324e98a415a0c4c5c32b9c2e6#10001 I Review | Constants | Periodic Table MISSED THIS? Read Section 16.6 (Pages 696 - 699) ; Watch IWE 16.5 . Part A Consider the following reaction: Fe3+ (aq) + SCN (aq) = FESCN²+ (aq) A solution is made containing an initial Fe+ of 1.2x10-3 M and an initial [SCN ] of 8.1×10-4 M . At equilibrium, [FESCN²+] = 1.8×10-4 M . Calculate the value of the equilibrium constant (Kc). Express your answer using two significant figures. View Available Hint(s) Πνα ΑΣφ ? K = Submit Previous Answers Request Answer * Incorrect; Try Again; 2 attempts remaining Provide Feedback Next :