General, Organic, and Biological Chemistry: Structures of Life 6th. Edition by Karen Timberlake | 9780134730684 | 134730682

General Chemistry, Organic Chemistry, Biological Chemistry

General, Organic, and Biological Chemistry: Structures of Life

240 SOLVED PROBLEMS

6 SOLVED PROBLEMS

Question: 11.4

Does the equilibrium mixture of the following reaction contain mostly reactants or products? HF(aq) + H2O(l) ⇔ H3O^+(aq) + F^-(aq) ...

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From Table 11.3, we see that HF is a weaker acid t...

Question: 6.14

Draw the Lewis structures for carbon dioxide, CO2. ...

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STEP 1 Determine the arrangement of atoms. In [l...

Question: 6.18

Determine whether a molecule of OF2 is polar or nonpolar. ...

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STEP 1 Determine if the bonds are polar covalent...

Question: 21.7

Use three-letter and one-letter abbreviations to write the amino acid sequence for the peptide from the mRNA sequence of 5′ UCA AAA GCC CUU 3′. ...

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

Question: 24.11

Identify the citric acid cycle intermediate produced by each of the following amino acids. Determine the number of ATP that can be produced when that intermediate proceeds through the remaining steps of the citric acid cycle and the resulting coenzymes are oxidized in electron transport: a. proline ...

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a. Proline is converted to the citric acid cycle ...

Question: 24.10

Indicate the reaction in the urea cycle where each of the following compounds is a reactant: a. aspartate b. ornithine c. arginine ...

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a. Aspartate and citrulline undergo condensation ...

Question: 24.9

Indicate whether each of the following represents a transamination or an oxidative deamination: a. Glutamate is converted to α-ketoglutarate and NH4^+. b. Alanine and α-ketoglutarate react to fonn pyruvate and glutamate. ...

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a. Oxidative deamination occurs when the

—...

Question: 24.8

Write the equation for the transamination of glutamate and oxaloacetate by drawing the condensed structural formulas. ...

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\underset{Glutamate }{{}^{-}OOC — \overset...

Question: 24.7

With a positive nitrogen balance, why are excess amino acids excreted? ...

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Because the body cannot store nitrogen, amino acid...

Question: 24.6

What are the sites and end products for the digestion of proteins? ...

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The digestion of proteins begins in the stomach an...

Question: 22.4

Coenzymes Describe the reactive part of each of the following coenzymes and the way each participates in metabolic pathways: a. FAD b. NAD^+ ...

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a. The oxidized form of FAD undergoes reduction wh...

Question: 9.9

A potassium iodide solution may be used in a diet that is low in iodine. A KI solution is prepared by dissolving 5.0 g of KI in enough water to give a final volume of 250 mL. What is the mass/volume percent (m/v) of KI in the solution? ...

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STEP 1 State the given and needed quantities. Ta...

Question: 8.11

Calcium carbonate, CaCO3, in antacids reacts with HCl in the stomach to reduce acid reflux. 2HCl(aq) + CaCO3(s) → CO2(g) + H2O(l) + CaCl2(aq) How many liters of CO2 are produced at 752 mmHg and 24 °C from a 25.0-g sample of calcium carbonate? ...

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STEP 1 State the given and needed quantities. Ta...

Question: 8.7

A weather balloon with a volume of 44 L is filled with 2.0 moles of helium. What is the final volume, in liters, if helium are added to give a total of 5.0 moles of helium, if the pressure and temperature do not change? ...

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STEP 1 State the given and needed quantities. We...

Question: 7.10

A salt shaker contains 73.7 g of NaCl. How many moles of NaCl are present? ...

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STEP 1 State the given and needed quantities. Ta...

Question: 4.3

Zinc, a micromineral, is needed for metabolic reactions in cells, DNA synthesis, the growth of bone, teeth, and connective tissue, and the proper functioning of the immune system. For an atom of zinc that has a mass number of 68, determine the number of: a. protons b. neutrons c. electrons ...

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a. Zinc (Zn), with an atomic number of 30, has 30...