Chemistry concepts and calculations

8. For each of the following steps, state which of the quantities, U, H, S, G, A

8. For each of the following steps, state which of the quantities, U, H, S, G, A are equal to zero for system specified: (a) a nonideal gas is taken around a Carnot cycle (b) a no…

8. For the reaction 4 K + 2 S 2 K2S, how many atoms of sulfur will react with 52

8. For the reaction 4 K + 2 S 2 K2S, how many atoms of sulfur will react with 52 atoms of K? 9. For the reaction 4 Na +2S 2 NaS, how many moles of sulfur will react with 158 moles…

8. GAS LAW OXIDATION OF GLUCOSE (C6H12O6) BY THE BODYPRODUCES CARBON DIOXIDE WHI

8. GAS LAW     OXIDATION OF GLUCOSE (C6H12O6) BY THE BODYPRODUCES CARBON DIOXIDE WHICH IS EXPELLED THROUGH THE LUNGS.       C6H12O6+6O2(G)----6CO2(G)+ 6 H2O (L)    CALCULATE THE V…

8. How many grams of aluminum hyfroxide will react with 75.5 ml of 0.250 M sulfu

8. How many grams of aluminum hyfroxide will react with 75.5 ml of 0.250 M sulfuric acid? Al(OH)3 + H2SO4 > Al2(SO4)3 + H20 (unbalanced) a. Detrmine the number of mole (mmoles)…

8. How many molecules of disulfur tetrachloride have a mass of 10.3 g? 6.2 x 10

8. How many molecules of disulfur tetrachloride have a mass of 10.3 g? 6.2 x 1023 molecules 6.2 x 1022 molecules 3.01 x 1023 molecules 3.01 x 1022 molecules 0.05 molecule 7. What …

8. How will a system originally at equilibrium respond to increase in pressure?

8. How will a system originally at equilibrium respond to increase in pressure? a. b. c. d. The system will shift towards reactants The system will shift towards products The syst…

8. Hydration by oxymercuration occurs by the mechanism below. Cirele the best an

8. Hydration by oxymercuration occurs by the mechanism below. Cirele the best answer in a) and b): a) the first intermediate is called a: cyclonium ion cyclopropane ion mercuriniu…

8. Hydrogen gas is collected over water at 24°C. The total pressure of the sampl

8. Hydrogen gas is collected over water at 24°C. The total pressure of the sample is 755 mmHg. At 24°C, the vapor pressure of water is 22 mmHg. What is the partial pressure of the…

8. If the number of moles and volume of a gas are constant and the temperature o

8. If the number of moles and volume of a gas are constant and the temperature of that gas is tripled, the pressure of the gas A) is doubled C) is quadrupled D) is halved E) remai…

8. In NMR terminology, protons H, and H, are said to be a. identical b. enantiot

8. In NMR terminology, protons H, and H, are said to be a. identical b. enantiotopic c. diastereotopic d. homotopic e. mesotopic structure shown, H, and H, are classified as: a. h…

8. In going down a column in the periodic table, the a. decreases because the va

8. In going down a column in the periodic table, the a. decreases because the valence electrons are further from the nucleus. b. increases because the electron repulsion increases…

8. In the laboratory, open-toed shoes and shorts: a. Are potentially dangerous a

8. In the laboratory, open-toed shoes and shorts: a. Are potentially dangerous and should not be worn. b. Are OK if the weather is hot. c. Are all right if you are wearing a lab c…

8. In this simulation, the reaction generates two products: A B + C At each step

8. In this simulation, the reaction generates two products: A B + C At each step, let one-tenth of the A molecules be transformed into B and C. Because B and C need to come togeth…

8. In which of the following solvents would you expect Ibuprophen (structure sho

8. In which of the following solvents would you expect Ibuprophen (structure shown below) to be soluble? OH a. H2O b. 1M HCI c. 1M NaOH d. None of the above 9. Which of the follow…

8. List the names of the basic anions, and explain how you know that they are ba

8. List the names of the basic anions, and explain how you know that they are basic. Acid pH BasepH Unknown pH #1 #2 #3 #4 #5 #6 2.95 5.60 10.61 |10.64 2.19 9.02 HC 1.99 NaOH 12.0…

8. Listed below is solubility vs. temperature data for an organic compound in wa

8. Listed below is solubility vs. temperature data for an organic compound in water Temp. sol. in 10 mL water 0 .5g 20 40 60 80 0.30 g 0.65 g 1.10 g 1.70 g a) Using the data in th…

8. Magnesium carbonate (MgCO3) and calcium carbonate (CaCO3) both decompose when

8. Magnesium carbonate (MgCO3) and calcium carbonate (CaCO3) both decompose when heated, forming CO2 gas and the corresponding oxides. MgCO3(s) CO2(g) + MgO(s) CaCO3(s) CO2(g) + C…

8. Mr. Bright is an analytical chemist at Innovative Lab Solutions Inc. He recei

8. Mr. Bright is an analytical chemist at Innovative Lab Solutions Inc. He receives a mystery compound and four possible structures for the mystery 0 ?? C+ Mr. Bright obtained the…

8. O 0.96/1 points I Previous Answers Silber7 16.3.034 For the reaction 4 A(g) 3

8. O 0.96/1 points I Previous Answers Silber7 16.3.034 For the reaction 4 A(g) 3 B(g) 2 C(g) the following data were obtained at constant temperature. Initial Rate Initial [A] Ini…

8. O2 can be converted to O, in the presence of an electrical spark according to

8. O2 can be converted to O, in the presence of an electrical spark according to the equation below The type of change taking place is a (A) chemical change because a new substanc…

8. On a horizontal plane such as this sheet of paper, an xcy-coordinate system i

8. On a horizontal plane such as this sheet of paper, an xcy-coordinate system is oriented along East-West and North-South directions as shown. The cross sections of two long stra…

8. Please match the orbital type with the correct number of orbitals. (4 points)

8. Please match the orbital type with the correct number of orbitals. (4 points) a. 9 b. 3 C. d. 2 f. 5 9. 7 h. 10 9. Which of the following states the Aufbau Principle? (1 point)…

8. Question Details (a) What is the mass, in grams, of 1.011 mol of iron (III) s

8. Question Details (a) What is the mass, in grams, of 1.011 mol of iron (III) sulfate? (b) How many moles of ammonium ions are in 6.806 g of ammonium carbonate? mol (c) What is t…

8. Rank the following substances in terms of boiling point from the lowest (1) t

8. Rank the following substances in terms of boiling point from the lowest (1) to the highest (6), and indicate the significant intermolecular force(s) in each. HOCH2CH2CH2OH CaF2…

8. Serum ion and standard iron solutions were analyzed according to the followin

8. Serum ion and standard iron solutions were analyzed according to the following procedure: To 1.00 ml of unknown & std samples are added 2.00 ml of reducing agent and 2.00 m…

8. Serum ion and standard iron solutions were analyzed according to the followin

8. Serum ion and standard iron solutions were analyzed according to the following procedure: To 1.00 ml of unknown & std samples are added 2.00 ml of reducing agent and 2.00 m…

8. Show the chemical equation for the reaction between acetic acid (HC H,O) and

8. Show the chemical equation for the reaction between acetic acid (HC H,O) and water. Is this a reversible reaction? If so, what type of value does K have for the reaction? Show …

8. Specific heat of Cu-0.377 J/gc Specific heat of Al-0.8os Jgc To raise the tem

8. Specific heat of Cu-0.377 J/gc Specific heat of Al-0.8os Jgc To raise the temperature of25.0 grams of these metals by S0 C; a both metals require the same amount of heat b. Cu …

8. State Dalton\'s law of partial pressures. (2 pts) 9. A sample of carbon monox

8. State Dalton's law of partial pressures. (2 pts) 9. A sample of carbon monoxide was collected over water at a total pressure of 766 torr and a temperature of 18°C·What is the p…

8. Sugar and Electrolytes in Drinks Every drink sold in the grocery store is lab

8. Sugar and Electrolytes in Drinks Every drink sold in the grocery store is labeled with its key chemical components, including carbohydrates, salt, and calories. Your assignment…

8. Sulfur trioxide gas can decompose to produce sulfur dioxide gas and oxygen ga

8. Sulfur trioxide gas can decompose to produce sulfur dioxide gas and oxygen gas. This reaction sets up an equilibrium between the reactant and products. Write a balanced chemica…

8. Suppose a quantity z is distributed formly in the range (-1,1]: p(z) const, s

8. Suppose a quantity z is distributed formly in the range (-1,1]: p(z) const, see Figure below. I unit the distribution is normalized to one, the vauue of this constant is: (a) 1…

8. Suppose that a student performed the experiment and calculations perfectly ex

8. Suppose that a student performed the experiment and calculations perfectly except for the following. Unknown to the student, Cu(NO3)2.3H20 instead of CuSO4·5H2O was used to mak…

8. Suppose that a student performed the experiment and calculations perfectly ex

8. Suppose that a student performed the experiment and calculations perfectly except for the following. Unknown to the student, Cu(NO3)2.3H20 instead of CuSO4·5H2O was used to mak…

8. TL C can be used to monitor the progress of a reaction. For example, let\'s s

8. TL C can be used to monitor the progress of a reaction. For example, let's say you are performing a dehydration reaction in the laboratory. You are starting with an alcohol and…

8. The Golgi apparatus is prominent in neurons and secretory cells and functions

8. The Golgi apparatus is prominent in neurons and secretory cells and functions a. to stop the synthesis of proteins that may need carbohydrate additions. b. to add polysaccharid…

8. The Golgi apparatus is prominent in neurons and secretory cells and functions

8. The Golgi apparatus is prominent in neurons and secretory cells and functions a. to stop the synthesis of proteins that may need carbohydrate additions. b. to add polysaccharid…

8. The acetate ion, CH,COO, reacts with water as a weak base: CH3COO-(aq) + H20(

8. The acetate ion, CH,COO, reacts with water as a weak base: CH3COO-(aq) + H20(c) CH3COOH(aq) + OH-(aq), with K-5.7 x 10-10 at 25°C. If sodium acetate were dissolved in water to …

8. The addition of HCl(aq) to a silver nitrate solution precipitates silver chlo

8. The addition of HCl(aq) to a silver nitrate solution precipitates silver chloride according to the following reaction: AgNO3 (aq) + HCl (g) AgCl(s) + HNO3 (aq) Hrxn = ? a. When…

8. The combustion of hexane produces carbon dioxide and water by the following:

8. The combustion of hexane produces carbon dioxide and water by the following: 2Callu + 1902 12co, + 14H,o. A reaction of 4.5 moles of Oz will produce- moles of Hz a. 0.937 b. 3.…

8. The following 1H NMR spectra represent the composition of the products submit

8. The following 1H NMR spectra represent the composition of the products submitted by two groups of students after completing the Diels Alder reaction between cyclopentadiene and…

8. The following reaction is a reduction reaction of magnetite (Fe3O4). Fe304 (s

8. The following reaction is a reduction reaction of magnetite (Fe3O4). Fe304 (s) 2C(s, graphite) 2CO2(g) 3Fe(s) a) Calculate standard Gibbs free energy of this reaction. b) Calcu…

8. The mobile phase in the above analysis is 50% methanol / 50% aqueous 1% aceti

8.     The mobile phase in the above analysis is 50% methanol / 50% aqueous 1% acetic acid. Firstly, it is changed to 40% methanol / 60% water (with 1% acetic acid) and then, seco…

8. The physical and chemical properties of an element are often an \"average\" o

8. The physical and chemical properties of an element are often an "average" of the properties of the surrounding elements. Consider Osmium, element number 76. 1t is preceded by R…

8. The published procedure called for the solution to be heated at reflux for 90

8. The published procedure called for the solution to be heated at reflux for 90 minutes, which would take up half of a 3-hour lab period. If this were shortened, conversion of st…

8. The published procedure called for the solution to be heated at reflux for 90

8. The published procedure called for the solution to be heated at reflux for 90 minutes, which would take up half of a 3-hour lab period. If this were shortened, conversion of st…

8. To prepare 250.0 mL of a Molar Mass 0.07500 M solution of AgNO, from the soli

8. To prepare 250.0 mL of a Molar Mass 0.07500 M solution of AgNO, from the solid g reagent, what mass of reagent must be used? (A) 3.185g (C) 75.00g AgNO, 169.87 gmol- (B) 5.662 …

8. Use the activity series to write a balanced chemical equation for the followi

8. Use the activity series to write a balanced chemical equation for the following single-replacement reactions. Write NR if no reaction occurs. a. C12(g) + NaF(aq) b, Ca(s) + H2O…

8. Use the activity series to write a balanced chemical equation for the followi

8. Use the activity series to write a balanced chemical equation for the following single-replacement reactions. Write NR if no reaction occurs. a. C12(g) + NaF(aq) b, Ca(s) + H2O…

8. Using LeChâtelier\'s Principal, describe how holding your breath lowers blood

8. Using LeChâtelier's Principal, describe how holding your breath lowers blood pHi HCO3 (g) H'(aa) H2CO3 (aq) CO2 (g) H2O + Step one, breath is held resulting in This results in:…