Chemistry concepts and calculations

1. Enthalpy Problem: Show your work neatly and methodically. At one time, a comm

1. Enthalpy Problem: Show your work neatly and methodically. At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3: 2 KClO3(s)-…

1. Enzyme kinetics laboratory experiment needs processing the observed spectrosc

1. Enzyme kinetics laboratory experiment needs processing the observed spectroscopic data to calculate the Michaelis Menten parameters for the enzyme. Two important steps in this …

1. Enzymes and transport proteins are globular proteins. 2. Fibrous proteins are

1. Enzymes and transport proteins are globular proteins. 2. Fibrous proteins are typically water-soluble. 3. The amino acids in a protein are "held together" by glycosidic bonds. …

1. Equal molar amounts of nitric acid (a strong acid) and methylamine (a weak ba

1. Equal molar amounts of nitric acid (a strong acid) and methylamine (a weak base) are combined in an aqueous solution. The pH of the resulting solution is: (A. greater than 7 B.…

1. Estimate the amount of product that may be lost as a result of recrystalizati

1. Estimate the amount of product that may be lost as a result of recrystalization of salicylic acid (solubility of salicylic acid at 10 C = 0.14g/100mL of water or .0014 g/mL). I…

1. Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 per cen

1. Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 per cent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels,…

1. Ethers are fairly unreactive. Which reagent can transform symmetrical ethers

1. Ethers are fairly unreactive. Which reagent can transform symmetrical ethers into two equivalents of the same alkyl halide? A. PBry B. HBr What is the major organic product of …

1. Ethers are fairly unreactive. Which reagent can transform symmetrical ethers

1. Ethers are fairly unreactive. Which reagent can transform symmetrical ethers into two equivalents of the same alkyl halide? A. PBry B. HBr What is the major organic product of …

1. Eugenol (clove oil) has a reported boiling point of 255 C at 760 mm Hg. Why w

1. Eugenol (clove oil) has a reported boiling point of 255 C at 760 mm Hg. Why would its boiling point during a steam distillation be less than 100 2. Would you recommend steam di…

1. Even though The solubilities of calcium iodate change in pure water and in 0.

1. Even though The solubilities of calcium iodate change in pure water and in 0.0100M potassium Iodate, the Ksp values will stay the same. Explain why this is so 2. Explain using …

1. Even-chain fatty acids and acetyl CoA are not precursors for gluconeogenesis

1. Even-chain fatty acids and acetyl CoA are not precursors for gluconeogenesis (in humans and other animals). a) how is acetyl CoA is converted into glucose in plants and bacteri…

1. Every complete statement starts with a ___________________. 2. How do you dec

1. Every complete statement starts with a ___________________. 2. How do you declare a variable constant _____________________________? 3. The design principle of ________________…

1. Exa mine the three compounds you are separating this week. Is 2-naphthol... .

1. Exa mine the three compounds you are separating this week. Is 2-naphthol... . Circle your answer) A strong acid a weak acid a weak base astrong b 2. B ased on your answer to qu…

1. Exa mine the three compounds you are separating this week. Is 2-naphthol... .

1. Exa mine the three compounds you are separating this week. Is 2-naphthol... . Circle your answer) A strong acid a weak acid a weak base astrong b 2. B ased on your answer to qu…

1. Exactly 2.0g of Kryptonite is dissolved in 100mL of Solvent A and then 100mL

1. Exactly 2.0g of Kryptonite is dissolved in 100mL of Solvent A and then 100mL is immisclible Solvent B is added. The distribution coefficient is K=SB/SA= 0.42. If a series of ex…

1. Examine the balanced net ionic equations for the metals that reacted anywhere

1. Examine the balanced net ionic equations for the metals that reacted anywhere in this experiment. Select all of the true statements from the list below. One of the products of …

1. Example Question 18.01 [18.02 Rate Laws | Integrated Rate Laws ] [Answer: (a)

1. Example Question 18.01 [18.02 Rate Laws | Integrated Rate Laws ] [Answer: (a) t1/2 = |247 min; (b) t = 819 min; (c) 10.9 g.] Sulfuryl chloride, SO2Cl2, decomposes by first-orde…

1. Execute the command What does this command do? Google it on the Internet. Typ

1. Execute the command What does this command do? Google it on the Internet. Type the following program and execute it. Can you tell from the result what the command DBMS_OUTPUT.P…

1. Exercise 11.79 A gas mixture contains 74% nitrogen and 26% oxygen. If the tot

1. Exercise 11.79 A gas mixture contains 74% nitrogen and 26% oxygen. If the total pressure is 1.18 atm what are the partial pressures of each component? Express your answers usin…

1. Explain atomic size, ionization potential, electronegativity and the general

1. Explain atomic size, ionization potential, electronegativity and the general periodic trend for each of these properties. Arrange the following atoms: O, Se, C, Si, F in order …

1. Explain briefly, why upon the electrolysis of an aqueous solution of NaF the

1. Explain briefly, why upon the electrolysis of an aqueous solution of NaF the product at the anode will be oxygen gas and at the cathode the product will be hydrogen gas. 2. How…

1. Explain how E al can be calculated from the tabulated standard reduction pote

1. Explain how E al can be calculated from the tabulated standard reduction potentials (like 2. Explain how the tabulated standard reduction potentials (like those given in append…

1. Explain how and when a pure substance can absorb heat energy and not change i

1. Explain how and when a pure substance can absorb heat energy and not change in temperature? What is really happening? 2. Draw a Lewis structure for CH3OH and formaldehyde (H2CO…

1. Explain how and when a pure substance can absorb heat energy and not change i

1. Explain how and when a pure substance can absorb heat energy and not change in temperature? What is really happening? 2. Draw a Lewis structure for CH3OH and formaldehyde (H2CO…

1. Explain how buffers resist changes in pH ufe resist y usng the t to neu tre i

1. Explain how buffers resist changes in pH ufe resist y usng the t to neu tre ina o ions and A to ne tyaize H ion- 2. What is the best way to increase the capacity of a buffer ma…

1. Explain how carbon dioxide and other greenhouse gases can lead to global warm

1. Explain how carbon dioxide and other greenhouse gases can lead to global warming. 2. What are some of the possible effects of a significant average temperature rise? 3. What do…

1. Explain how heat effects the solubility of gas in a solvent. How is different

1. Explain how heat effects the solubility of gas in a solvent. How is different from how heat effects the solubility of a solid solute in a solvent? (5 pts) 2. How does pressure …

1. Explain in your own words what each of the following does: a. b. 2. Write a a

1. Explain in your own words what each of the following does: a. b. 2. Write a a. b. c. cin.get cin.ignore short program that asks the user for their first name and last name find…

1. Explain the chemistry with reaction equations and structures for both the sap

1. Explain the chemistry with reaction equations and structures for both the saponification and the sodium methoxide transesterification of oleic acid. Explain the difference betw…

1. Explain the chemistry with reaction equations and structures for both the sap

1. Explain the chemistry with reaction equations and structures for both the saponification and the sodium methoxide transesterification of oleic acid. Explain the difference betw…

1. Explain the difference between batch processing and transaction (real time) p

1. Explain the difference between batch processing and transaction (real time) processing. Describe a company (real or imagined) that uses batch processing (3-5 sentences). Do the…

1. Explain the difference between molecular formulas and empirical formulas. Giv

1. Explain the difference between molecular formulas and empirical formulas. Give an example of a substance whose empirical formula is different from its molecular formula. Give a…

1. Explain the purpose of each step: a. The ether solution is washed with 5% Sod

1. Explain the purpose of each step: a. The ether solution is washed with 5% Sodium Hydroxide. b. The ether solution is washed with 10% Hydrochloric acid. c. The ether solution is…

1. Explain what a flame test has to do with atomic spectroscopy. 2. Consider the

1. Explain what a flame test has to do with atomic spectroscopy. 2. Consider the electron of the H atom that undergoes the transition of n = 9->6. a). How much energy is releas…

1. Explain what a state function is and give an example. 2. Define enthalpy. 3.

1. Explain what a state function is and give an example. 2. Define enthalpy. 3. Does the enthalpy change in burning a fuel depend on whether it is a solid, liquid, or gas? 4. Give…

1. Explain what happens to the analyte sample when it is aspirated into the flam

1. Explain what happens to the analyte sample when it is aspirated into the flame of the AA, including ionization and atomizaiton. (Flame atomic absorption spectroscopy) 2. The fl…

1. Explain what happens to the analyte sample when it is aspirated into the flam

1. Explain what happens to the analyte sample when it is aspirated into the flame of the AA, including ionization and atomizaiton. (Flame atomic absorption spectroscopy) 2. The fl…

1. Explain what is an emulsion. Why do you think emulsion take place? How can we

1. Explain what is an emulsion. Why do you think emulsion take place? How can we remove emulsion? 2. Choose the reagents which can be used to convert benzoic acid into sodium benz…

1. Explain why 4-hydroxy-4-methyl-2-pentanone is not a major side- product in th

1. Explain why 4-hydroxy-4-methyl-2-pentanone is not a major side- product in the aldol reaction you performed. 2. Why is the crude product in this experiment washed with sodium b…

1. Explain why an object whose color is purple actually absorbs visible light in

1. Explain why an object whose color is purple actually absorbs visible light in the green wavelength region. 2. If the concentration of an unknown solution we were studying in a …

1. Explain why both phosphofructokinase and pyruvate are inhibited by high level

1. Explain why both phosphofructokinase and pyruvate are inhibited by high levels of ATP 2. Indicate which of the conditions increase the activity of the glycolysis or gluconeogen…

1. Explain why during a spontaneous process the entropy change of the system cou

1. Explain why during a spontaneous process the entropy change of the system could be negative. (How could the entropy of the system decrease for a spontaneous process?) 2. Calcul…

1. Explain why halide ions (e.g., F? , Cl? , Br? , I? ) function only as monoden

1. Explain why halide ions (e.g., F? , Cl? , Br? , I? ) function only as monodentate ligands in coordination compounds even though halide ions contain four unshared pairs of elect…

1. Explain why in a reaction involving two reactants, one reactant is said to be

1. Explain why in a reaction involving two reactants, one reactant is said to be limiting and the other reactant is to be in excess. 2. Write a balanced chemical equation for the …

1. Explain why is malted barley used in this experiment rather than raw, unmalte

1. Explain why is malted barley used in this experiment rather than raw, unmalted barley 2. What is the most important stabilizing force for secondary structures in proteins? 3. I…

1. Explain why methamphetaminie is often converted to methanphetamine hydrochlor

1. Explain why methamphetaminie is often converted to methanphetamine hydrochloride. 2. Some of the minerals found in rocks dissolve in water as it flows over the rocks. Would the…

1. Explain why sodium polyacrylate powder turns into a gel when mixed with water

1. Explain why sodium polyacrylate powder turns into a gel when mixed with water. 2. Ion hydration is an important part of the gel dissolving process. Draw a labeled hydration sph…

1. Explain why the atoms of elements in Groups IA, IIA, and IIIA of the Periodic

1. Explain why the atoms of elements in Groups IA, IIA, and IIIA of the Periodic Table tend to lose electrons, while atoms of elements in Groups VA,VIA, and VIIA tend to gain elec…

1. Explain why the heat of vaporization of a substance is much greater than the

1. Explain why the heat of vaporization of a substance is much greater than the heat of fusion for the same substance. 2. Explain why the vapor pressure of water in equilibrium wi…

1. Explain why the preparation of Nylon -6,10 occurs under milder conditions whe

1. Explain why the preparation of Nylon -6,10 occurs under milder conditions when decanedioyl dichloride is used instead of decanedioic acid. Using curved arrows to symbolize the …