Chemistry: An Introduction to General, Organic, and Biological Chemistry 11th. Edition by Karen C. Timberlake | 9780321693457 | 0321693450 | Holooly

General Chemistry, Biological Chemistry, Organic Chemistry

Chemistry: An Introduction to General, Organic, and Biological Chemistry

1 SOLVED PROBLEMS

304 SOLVED PROBLEMS

Question: 3.1

Classify each of the following as a pure substance (element or compound) or a mixture (homogeneous or heterogeneous): a. copper in wire b. a chocolate-chip cookie c. nitrox, a combination of oxygen and nitrogen used to fill scuba tanks ...

Verified Answer:

a. Copper is an element, which is a pure substanc...

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Question: 1.CC.9

Conversion Factors Identify one or more correct conversion factors for the equality of gigagrams and grams. a. 1 Gg/1 × 10^9 g b. 1 × 10^-9 g/1 Gg c. 1 × 10^9 Gg/1 g d. 1 × 10^9 g/1 Gg ...

Verified Answer:

In Table 1.8, the equality for gigagrams and grams...

Question: 2.CC.6

Energy Values of Food When 55 g of pasta is burned in a calorimeter, 220 Cal of heat is released. What is the energy value of pasta in kcal/g? ...

Verified Answer:

Using the equality 1 Cal = 1 kcal , we can calcula...

Question: 8.CC.3

Strengths of Acids and Bases For each of the following questions, select from HCO3¯, H2SO4, or HNO2: a. Which is the strongest acid? b. Which acid is the weakest? ...

Verified Answer:

a. The strongest acid in this group is the acid li...

Question: 16.CC.3

Ionized Forms of Amino Acids Consider the amino acid cysteine. a. What is the pI of cysteine and what does it mean? b. At a pH of 2.0, how does the zwitterion of cysteine change? c. At a pH of 8.0, how does the zwitterion of cysteine change? ...

Verified Answer:

a. From Table 16.2, the pI of cysteine is 5.1, whi...

Question: 17.SP.6

Protein Synthesis: Translation What order of amino acids would you expect in a peptide for the mRNA sequence of — UCA — AAA — GCC — CUU — ? ...

Verified Answer:

Each of the codons specifies a particular amino ac...

Question: 17.SP.5

Codons What is the sequence of amino acids specified by the following codons in mRNA? — GUC — AGC — CCA — ...

Verified Answer:

According to Table 17.4, GUC codes for valine, AGC...

Question: 18.CC.10

Degradation of Amino Acids Describe the reactions and functions of transamination and oxidative deamination. ...

Verified Answer:

Transamination involves the transfer of an amino g...

Question: 18.CC.9

Chemiosmotic Model Consider the process of proton pumping in the chemiosmotic model. a. What changes in pH take place in the mitochondrial matrix and in the intermembrane space? b. How do the protons return to the matrix? c. How is energy obtained for the synthesis of ATP? ...

Verified Answer:

a. The process of proton pumping “pushes” protons ...

Question: 18.CC.8

Reactions of Part 2 of the Citric Acid Cycle a. Where is ATP produced by a direct phosphate transfer in the citric acid cycle? b. Where is oxaloacetate generated in the citric acid cycle? ...

Verified Answer:

a. Reaction 5 in the citric acid cycle produces GT...

Question: 18.CC.7

Reactions of Part 1 of the Citric Acid Cycle a. What is the function of reaction 1 in the citric acid cycle? b. Why does citrate undergo isomerization in reaction 2? ...

Verified Answer:

a. Reaction 1 in the citric acid cycle combines an...

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