Thioridazine, C 21 H 26 N 2 S 2 , is a pharmaceutical agent used to regulate dopamine (Dopamine, a neurotransmitter, affects brain processes that control movement emotional response, and ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert the sulfur in the compound to sulfate ion. This is then “trapped” as water-insoluble barium sulfate (see Figure 4.4). SO 4 2− (aq, from thioridazine) + BaCl 2 (aq) → BaSO 4 (s) + 2 Cl − (aq) Suppose a 12-tablet sample of the drug yielded 0.301 g of BaSO 4 . What is the thioridazine content, in milligrams, of each tablet?
Thioridazine, C 21 H 26 N 2 S 2 , is a pharmaceutical agent used to regulate dopamine (Dopamine, a neurotransmitter, affects brain processes that control movement emotional response, and ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert the sulfur in the compound to sulfate ion. This is then “trapped” as water-insoluble barium sulfate (see Figure 4.4). SO 4 2− (aq, from thioridazine) + BaCl 2 (aq) → BaSO 4 (s) + 2 Cl − (aq) Suppose a 12-tablet sample of the drug yielded 0.301 g of BaSO 4 . What is the thioridazine content, in milligrams, of each tablet?
Solution Summary: The author explains the relation between the number of moles and the mass of the substance. The balanced chemical equation is written in accordance with the Law of Conservation of Mass.
Thioridazine, C21H26N2S2, is a pharmaceutical agent used to regulate dopamine (Dopamine, a neurotransmitter, affects brain processes that control movement emotional response, and ability to experience pleasure and pain.) A chemist can analyze a sample of the pharmaceutical for the thioridazine content by decomposing it to convert the sulfur in the compound to sulfate ion. This is then “trapped” as water-insoluble barium sulfate (see Figure 4.4).
SO42−(aq, from thioridazine) + BaCl2(aq) → BaSO4(s) + 2 Cl−(aq)
Suppose a 12-tablet sample of the drug yielded 0.301 g of BaSO4. What is the thioridazine content, in milligrams, of each tablet?
Explain the importance of having a sampling plan with respect to food analysis.
Explain the importance of having a sampling plan with respect to food analysis. Provide examples.
Please predict the products for each of the
following reactions.
Clearly show the regiochemistry (Markovnikov
vs anti-Markovnikov) and stereochemistry
(syn- vs anti- or both).
If a mixture of enantiomers is formed, please
draw all the enantiomers.
cold
KMnO4, NaOH
2. DMS
1. 03
CH3OH
Br2
1.
03
2. (CH3)2S
H₂
Pd or Pt (catalyst)
HBr
18
19
20 1
HBr
ROOR (peroxide)
H₂O
H₂SO4
HCI
HI
17
16
6
15
MCPBA
1. BH3 THF
2. H₂O2, NaOH
1. OsO4
2. H₂O₂
110
CH3CO₂H
(peroxyacid)
1. MCPBA
2. H₂O*
Br2
H₂O
BH3 THF
B12
EtOH
Pd or Ni (catalyst)
D₂ (deuterium)
Bra
A
B
C
D
H
OH
H
OH
OH
H
OH
α α α
OH
H
OH
OH
фон
d
H
"H
Briefly indicate the models that describe the structure of the interface: Helmholtz-Perrin, Gouy-Chapman, Stern and Grahame models.
Chapter 4 Solutions
OWLv2 6-Months Printed Access Card for Kotz/Treichel/Townsend's Chemistry & Chemical Reactivity, 9th, 9th Edition
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell