Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
11th Edition
ISBN: 9781305705159
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 31, Problem 31.33P
Interpretation Introduction
Interpretation:
Determine the adhesion molecule in the TcR complex that helps HIV infect a leukocyte.
Concept Introduction:
The TcR complexes are formed when TcR molecules combine with cluster determinant proteins. T-cell receptors are unable to bind with the antigens alone, thus they require extra protein molecules termed as cluster determinants.
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Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
Ar
1
Calculating the pH at equivalence of a titration
Try Again
Your answer is incorrect.
0/5
a
A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of
hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH
=
11.43]
G
00.
18
Ar
B•
Chapter 31 Solutions
Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
Ch. 31 - Give two examples of external innate immunity in...Ch. 31 - Prob. 31.2PCh. 31 - Prob. 31.3PCh. 31 - Prob. 31.4PCh. 31 - Prob. 31.5PCh. 31 - Prob. 31.6PCh. 31 - Prob. 31.7PCh. 31 - 31-8 What are memory cells? What is their...Ch. 31 - Prob. 31.9PCh. 31 - Prob. 31.10P
Ch. 31 - Prob. 31.11PCh. 31 - Prob. 31.12PCh. 31 - Prob. 31.13PCh. 31 - Prob. 31.14PCh. 31 - Prob. 31.15PCh. 31 - Prob. 31.16PCh. 31 - When a foreign substance is injected in a rabbit,...Ch. 31 - Prob. 31.18PCh. 31 - (a) Which immunoglobulin has the highest...Ch. 31 - Chemical Connections 20D states that the antigen...Ch. 31 - Prob. 31.21PCh. 31 - Prob. 31.22PCh. 31 - Prob. 31.23PCh. 31 - Prob. 31.24PCh. 31 - Prob. 31.25PCh. 31 - Prob. 31.26PCh. 31 - What accounts for antibody diversity?Ch. 31 - Prob. 31.28PCh. 31 - Prob. 31.29PCh. 31 - Prob. 31.30PCh. 31 - Prob. 31.31PCh. 31 - Prob. 31.32PCh. 31 - Prob. 31.33PCh. 31 - Prob. 31.34PCh. 31 - Prob. 31.35PCh. 31 - Prob. 31.36PCh. 31 - Prob. 31.37PCh. 31 - Prob. 31.38PCh. 31 - Prob. 31.39PCh. 31 - Prob. 31.40PCh. 31 - Prob. 31.41PCh. 31 - Prob. 31.42PCh. 31 - Prob. 31.43PCh. 31 - Prob. 31.44PCh. 31 - Prob. 31.45PCh. 31 - Prob. 31.46PCh. 31 - Prob. 31.47PCh. 31 - Prob. 31.48PCh. 31 - Prob. 31.49PCh. 31 - Prob. 31.50PCh. 31 - Prob. 31.51PCh. 31 - Prob. 31.52PCh. 31 - Prob. 31.53PCh. 31 - Prob. 31.54PCh. 31 - Prob. 31.55PCh. 31 - Prob. 31.56PCh. 31 - Prob. 31.57PCh. 31 - Prob. 31.58PCh. 31 - Prob. 31.59PCh. 31 - Prob. 31.60PCh. 31 - Prob. 31.61PCh. 31 - Prob. 31.62PCh. 31 - Prob. 31.63PCh. 31 - Prob. 31.64PCh. 31 - Prob. 31.65PCh. 31 - Prob. 31.66PCh. 31 - Prob. 31.67PCh. 31 - Prob. 31.68PCh. 31 - Prob. 31.69PCh. 31 - Prob. 31.70PCh. 31 - Prob. 31.71PCh. 31 - Prob. 31.72PCh. 31 - Prob. 31.73PCh. 31 - Prob. 31.74PCh. 31 - Prob. 31.75PCh. 31 - Prob. 31.76PCh. 31 - Prob. 31.77PCh. 31 - Prob. 31.78PCh. 31 - Prob. 31.79PCh. 31 - Prob. 31.80PCh. 31 - Prob. 31.81PCh. 31 - Prob. 31.82PCh. 31 - Prob. 31.83PCh. 31 - Prob. 31.84PCh. 31 - Prob. 31.85PCh. 31 - Prob. 31.86P
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- Using the conditions of spontaneity to deduce the signs of AH and AS Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A The reverse of this reaction is always spontaneous but proceeds faster at temperatures above -48. °C. ΔΗ is (pick one) ✓ AS is (pick one) B This reaction is spontaneous except below 114. °C but proceeds at a slower rate below 135. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is C This reaction is exothermic and proceeds faster at temperatures above -43. °C. (pick one) AS is (pick one) v Х 5 ? 18 Ararrow_forwardion. A student proposes the following Lewis structure for the perchlorate (CIO) io : :0: : Cl : - - : :0: ك Assign a formal charge to each atom in the student's Lewis structure. atom central O formal charge ☐ top O ☐ right O ☐ bottom O ☐ Cl ☐arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Yes. Is the proposed Lewis structure reasonable? Cl- : 2: :Z: :Z: N—N : 0: C C1: O CO No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ☐ Yes. No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". ☑arrow_forward
- Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions ΔΗ is (pick one) A This reaction is faster above 103. °C than below. AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous only above -9. °C. AS is (pick one) ΔΗ is (pick one) C The reverse of this reaction is always spontaneous. AS is (pick one) 18 Ararrow_forwardUse the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 41. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 94. °C. AS is (pick one) This reaction is always spontaneous, but ΔΗ is (pick one) C proceeds slower at temperatures below −14. °C. AS is (pick one) Х 00. 18 Ar 무ㅎ B 1 1arrow_forwardDraw the product of the reaction shown below. Ignore inorganic byproducts. + H CH3CH2OH HCI Drawingarrow_forward
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