Chemistry: The Science in Context 5th. Edition by Thomas R. Gilbert | 9780393264845 | 039326484X | Holooly

Chemistry: The Science in Context

297 SOLVED PROBLEMS

Question: 22.6

The protein transferrin is involved in the transport of iron into cells. Iron accumulation in the human body has been implicated in diseases such as Parkinson’s, Alzheimer’s, and thalassemia. The chelating ligand deferoxamine (DFO) is used to treat thalassemia; the complex between iron and DFO is ...

Question: 22.5

Sketch the structures and name the stereoisomers of Ni(NH3)4Cl2. ...

Question: 22.4

Determine which of these ions can have high-spin and low-spin configurations when part of an octahedral complex: (a) Mn^4+; (b) Mn^2+; (c) Cu^2+. ...

Question: 22.3

How many donor groups does this polydentate ligand, nitrilotriacetic acid (NTA), have? ...

Question: 22.2

Name the coordination compounds (a) Na4[Co(CN)6] and (b) [Co(NH3)5Cl](NO3)2. ...

Question: 22.1

The first modern synthetic color, Prussian blue, was made in 1704 in Berlin, Germany. It was heavily used in the 19th-century Japanese woodblock print The Great Wave off Kanagawa (Figure 22.4), and it continues to be popular with artists worldwide. The formula for the insoluble pigment is ...

Question: 21.5

Indium-111 (t1/2 = 2.805 d) and gallium-67 (t1/2 = 3.26 d) are both used in radioimaging to diagnose chronic infections. Which isotope decays faster? If we start with 10.0 mg of each isotope, how much of each remains after 24 h? ...

Question: 21.4

Dimethyl sulfide, CH3SCH3, is one of the products of the sulfur cycle in Figure 21.9. In marine environments, dimethyl sulfide can be oxidized by bacteria to dimethyl sulfoxide, (CH3)2SO. a. Draw Lewis structures for CH3SCH3 and (CH3)2SO, and determine the molecular geometry about the S atom in ...

Question: 21.3

Nitrate ion can be reduced to ammonia by enzymes called nitrate reductases. The first step is conversion of nitrate ion to nitrite ion. Assign oxidation numbers to the elements in these ions, and write a balanced equation for the following half-reaction in a basic solution:NO3^-(aq) → NO2^-(aq) ...

Question: 21.2

Acid reflux (sometimes called heartburn, though the heart is not involved) affects many people. It results from acid in the stomach leaking into the esophagus and causing discomfort. Stomach acid is primarily an aqueous solution of HCl. (a) Calculate the molarity of hydrochloric acid in gastric ...

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