Chemistry
3rd Edition
ISBN: 9780073402734
Author: Julia Burdge
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 24, Problem 11QP
Elements number 17 and 20 form compounds with hydrogen. Write the formulas for these two compounds, and compare their chemical behavior in water.
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14:30 A
Candidate Identification
docs.google.com
10. Amoxicillin (figure X) is one of the
most widely used antibiotics in the
penicillin family. The discovery and
synthesis of these antibiotics in the 20th
century made the treatment of infections
that were previously fatal routine.
About amoxicillin, mark the correct one:
HO
NH2 H
S
-N.
HO
Figura X. Amoxicilina
A) It has the organic functions amide,
ester, phenol and amine.
B) It has four chiral carbons and 8
stereoisomers.
C) The substitution of the aromatic ring
is of the ortho-meta type.
D) If amoxicillin reacts with an alcohol it
can form an ester.
E) The structure has two tertiary
amides.
62
The environmental police of a Brazilian state received a report of contamination of a river by inorganic arsenic, due to the excessive use of pesticides on a plantation on the riverbanks. Arsenic (As) is extremely toxic in its many forms and oxidation states. In nature, especially in groundwater, it is found in the form of arsenate (AsO ₄ ³ ⁻ ), which can be electrochemically reduced to As ⁰ and collected at the cathode of a coulometric cell. In this case, Potentiostatic Coulometry (at 25°C) was performed in an alkaline medium (pH = 7.5 throughout the analysis) to quantify the species. What potential (E) should have been selected/applied to perform the analysis, considering that this is an exhaustive electrolysis technique (until 99.99% of all AsO ₄ ³ ⁻ has been reduced to As ⁰ at the electrode, or n( final) = 0.01% n( initial )) and that the concentration of AsO ₄ ³ ⁻ found in the initial sample was 0.15 mmol/L ?
Data:
AsO ₄ 3 ⁻ (aq) + 2 H ₂ O ( l ) + 2 e ⁻ → A s O ₂ ⁻ ( a…
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14:17
15. Water-soluble proteins are denatured
when there is a change in the pH of the
environment in which they are found. This
occurs due to the protonation and
deprotonation of functional groups
present in their structure. Choose the
option that indicates the chemical bonds
modified by pH in the protein represented
in the following figure.
E
CH2
C-OH
CH2
H₂C
H₁C
CH
CH3
CH3
CH
CH₂-S-S-CH₂-
910
H
B
-CH2-CH2-CH2-CH₂-NH3* −0—C—CH₂-
○ A) A, C e D.
• В) Вес
○ C) DeE
○ D) B, De E
○ E) A, B e C
68
Chapter 24 Solutions
Chemistry
Ch. 24 - Prob. 1QPCh. 24 - Prob. 2QPCh. 24 - Prob. 3QPCh. 24 - Prob. 4QPCh. 24 - Prob. 5QPCh. 24 - Describe two laboratory and two industrial...Ch. 24 - Prob. 7QPCh. 24 - Prob. 8QPCh. 24 - Prob. 9QPCh. 24 - Prob. 10QP
Ch. 24 - Elements number 17 and 20 form compounds with...Ch. 24 - Give an example of hydrogen as (a) an oxidizing...Ch. 24 - Prob. 13QPCh. 24 - Prob. 14QPCh. 24 - Prob. 15QPCh. 24 - Prob. 16QPCh. 24 - Prob. 17QPCh. 24 - Prob. 18QPCh. 24 - Prob. 19QPCh. 24 - Prob. 20QPCh. 24 - Briefly discuss the preparation and properties of...Ch. 24 - Prob. 22QPCh. 24 - Prob. 23QPCh. 24 - Prob. 24QPCh. 24 - Prob. 25QPCh. 24 - Prob. 26QPCh. 24 - Prob. 27QPCh. 24 - Prob. 28QPCh. 24 - Prob. 29QPCh. 24 - Prob. 30QPCh. 24 - 24.31 Sodium hydroxide is hygroscopic-that is. it...Ch. 24 - Prob. 32QPCh. 24 - Prob. 33QPCh. 24 - 24.34 Describe a laboratory and an industrial...Ch. 24 - Prob. 35QPCh. 24 - Prob. 36QPCh. 24 - Prob. 37QPCh. 24 - Prob. 38QPCh. 24 - Prob. 39QPCh. 24 - Prob. 40QPCh. 24 - Prob. 41QPCh. 24 - Prob. 42QPCh. 24 - Prob. 43QPCh. 24 - Prob. 44QPCh. 24 - Prob. 45QPCh. 24 - Prob. 46QPCh. 24 - Prob. 47QPCh. 24 - Prob. 48QPCh. 24 - Prob. 49QPCh. 24 - Prob. 50QPCh. 24 - Prob. 51QPCh. 24 - Prob. 52QPCh. 24 - Prob. 53QPCh. 24 - Prob. 54QPCh. 24 - Prob. 55QPCh. 24 - Prob. 56QPCh. 24 - Describe one industrial and one laboratory...Ch. 24 - Prob. 58QPCh. 24 - Prob. 59QPCh. 24 - Prob. 60QPCh. 24 - Prob. 61QPCh. 24 - Prob. 62QPCh. 24 - Prob. 63QPCh. 24 - Prob. 64QPCh. 24 - Prob. 65QPCh. 24 - Prob. 66QPCh. 24 - Prob. 67QPCh. 24 - Prob. 68QPCh. 24 - Prob. 69QPCh. 24 - Prob. 70QPCh. 24 - Prob. 71QPCh. 24 - Prob. 72QPCh. 24 - Prob. 73QPCh. 24 - Prob. 74QPCh. 24 - Prob. 75QPCh. 24 - 24.76 Describe two reactions in which sulfuric...Ch. 24 - Prob. 77QPCh. 24 - Prob. 78QPCh. 24 - Prob. 79QPCh. 24 - Prob. 80QPCh. 24 - Prob. 81QPCh. 24 - Prob. 82QPCh. 24 - Prob. 83QPCh. 24 - Prob. 84QPCh. 24 - Prob. 85QPCh. 24 - Prob. 86QPCh. 24 - Prob. 87QPCh. 24 - Prob. 88QPCh. 24 - Prob. 89APCh. 24 - Prob. 90APCh. 24 - Prob. 91APCh. 24 - Prob. 92APCh. 24 - Prob. 93APCh. 24 - Prob. 94APCh. 24 - Prob. 95APCh. 24 - 24.96 Consider the Frasch process, (a) How is it...Ch. 24 - Prob. 97APCh. 24 - Prob. 98APCh. 24 - Prob. 99APCh. 24 - Life evolves to adapt to its environment. In this...Ch. 24 - Prob. 101APCh. 24 - Prob. 102APCh. 24 - Prob. 103APCh. 24 - Prob. 104APCh. 24 - Prob. 1SEPPCh. 24 - Prob. 2SEPPCh. 24 - Prob. 3SEPPCh. 24 - Prob. 4SEPP
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