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WWLS U Ludereedback Pant Into A 1.70 g sample of water is introduced into a 0.257...
A 1.00 g sample of water is introduced into a 0.767 L flask containing some O2 gas. The flask is ...
A 1.00 g sample of water is introduced into a 0.767 L flask containing some O2 gas. The flask is heated to 215.93 °C at which temperature all of the water is converted to the gaseous phase, giving a total pressure in the flask of 6.010 atm. 1. Calculate PH20 (in atm) in the flask at 215.93 °C. Report your answer to three decimal places in standard notation (i.e. 1.234 atm). 交答案 Tries 0/99 2. Calculate PO2 (in atm) in...
1. The octanol-water partition coefficient (Kow) for 1,2-diphenylhydrazine (C12H12N2) is 21.88. Determine the equilibrium concentration (in...
1. The octanol-water partition coefficient (Kow) for 1,2-diphenylhydrazine (C12H12N2) is 21.88. Determine the equilibrium concentration (in mol/L) of 1,2-diphenylhydrazine in octanol, if the equilibrium concentration of 1,2-diphenylhydrazine in water is 6.23 x 10-3. Report your answer to three significant figures in scientific notation. Submit Answer Tries 0/13 2. The octanol-water partition coefficient (Kow) for trimethylamine (C3H9N) is 1.45. At equilibrium, the concentration of trimethylamine (C3H9N) was found to be 5.57 x 10-1 M in octanol. Determine the mass (in g)...
7.An electrochemical cell consists of a Mg electrode in a solution of 0.548 M Mg+ coupled...
7.An electrochemical cell consists of a Mg electrode in a solution of 0.548 M Mg+ coupled to a Pd electrode in a solution of 0.438 M Pd2+ , all held at 20.1 °C. Mg+(aq) + e− ⇌ Mg(s) E° = -2.700 V Pd2+(aq) + 2e− ⇌ Pd(s) E° = 0.951 V 1. Determine Ecell (in V). Report your answer to three decimal places in standard notation (i.e. 1.234 V). Tries 0/3 2. Determine ΔG (in kJ). Report your answer to three significant...
Use the reduction potentials, the unbalanced half reactions and the unbalanced chemical equation below to answer...
Use the reduction potentials, the unbalanced half reactions and the unbalanced chemical equation below to answer the following questions: Reaction E° (V) In+(aq) + e− → In(s) -0.140 In3+(aq) + e− → In(s) -0.338 In(s) + In3+(aq) → In+(aq) + In(s) 1. Determine Ecell (in V) for this reaction in the direction shown. Report your answer to three decimal places in standard notation (i.e. 1.234 V). Tries 0/5 2. Determine ΔG° (in kJ) for this reaction. Report your answer to...
1. A sample of hydrochloric acid (HCI), which is an acid, with a mass of 0.7302 g is dissolved in water and used to sta...
1. A sample of hydrochloric acid (HCI), which is an acid, with a mass of 0.7302 g is dissolved in water and used to standardize a solution of barium hydroxide. An endpoint is reached when 47.81 mL of barium hydroxide has been added. Determine the molarity (in mol/L) of the barium hydroxide solution. Report your answer to four significant figures. Submit Answer Tries 0/13 2. The standardized barium hydroxide solution is then used to titrate 13.86 mL of a solution...
Use the vapour pressures (at 25 °C) of the pure substances below to answer the following...
Use the vapour pressures (at 25 °C) of the pure substances below to answer the following questions р* (КРa) Substance 3-methyl-1-butanol (C5H120) 0.315 ethyl formate (C3H602) 32.3 1. Determine the partial pressure (in kPa) of ethyl formate (C3H602) in the vapour phase (at 25 °C) over a solution for which the mole fraction of 3-methyl-1-butanol (C5H120) is 0.322. Report your answer to three significant figures in scientific notation. Tries 0/13 Submit Answer 2. A solution of 3-methyl-1-butanol (C5H120) and ethyl...
Calculate the standard enthalpy change, ΔΗ0rn, în k] for the following chemical equation, using o...
Calculate the standard enthalpy change, ΔΗ0rn, în k] for the following chemical equation, using only the thermochemical equations below. Please Go Over This Question In etail 12NH3(aq) 1502(9)12NOg)18H200) Report your answer to three significant figures in scientific notation. Equations: 1/2N2(g) 1/202(g) NO(g) 1/2N2(g) O2(9) NO2(9) 4NH3(g) + 7O2(g) → 4NO2(g) + 6H20(1) 90.4 33.8 -1326.2 Submit Answer Incorrect. . Tries 2/99 Previous Tries Submissions to practice problems are not permanently recorded
Calculate the standard enthalpy change, ΔΗ0rn, în k] for...
0.741 V You are correct. Your receipt no. is 156-8240 Previous Tries 2. Determine Ecell (in...
0.741 V You are correct. Your receipt no. is 156-8240 Previous Tries 2. Determine Ecell (in V) at 298.15 K for a cell composed of a Ti electrode in a solution of 0.372 M + coupled to a platinum electrode in a solution where the [H] is 0.984 M and the partial pressure of Hy is 1.500 atm. Report your answer to three decimal places in standard notation (I.e. 1.234 V).
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give si...
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give signals of 1.10, 1.90, 1.20, 1.30, 1.60, 1.70, and 1.70 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the standard deviation of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the minimum detectable concentration (detection limit in ppm) with appropriate...
A 1.00 L flask is filled with 1.10 g of argon at 25 °C. A sample...
A 1.00 L flask is filled with 1.10 g of argon at 25 °C. A sample of ethane vapor is added to the same flask until the total pressure is 1.400 atm Part A What is the partial pressure of argon, PAr, in the flask? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) HA PAr0.727 atm Previous Answers Submit Incorrect; Try Again Part B What is the partial pressure of ethane, Pethane, in...
A 1.00 g sample of water is introduced into a 0.767 L flask containing some O2 gas. The flask is heated to 215.93 °C at which temperature all of the water is converted to the gaseous phase, giving a total pressure in the flask of 6.010 atm. 1. Calculate PH20 (in atm) in the flask at 215.93 °C. Report your answer to three decimal places in standard notation (i.e. 1.234 atm). 交答案 Tries 0/99 2. Calculate PO2 (in atm) in...
1. The octanol-water partition coefficient (Kow) for 1,2-diphenylhydrazine (C12H12N2) is 21.88. Determine the equilibrium concentration (in mol/L) of 1,2-diphenylhydrazine in octanol, if the equilibrium concentration of 1,2-diphenylhydrazine in water is 6.23 x 10-3. Report your answer to three significant figures in scientific notation. Submit Answer Tries 0/13 2. The octanol-water partition coefficient (Kow) for trimethylamine (C3H9N) is 1.45. At equilibrium, the concentration of trimethylamine (C3H9N) was found to be 5.57 x 10-1 M in octanol. Determine the mass (in g)...
1. A sample of hydrochloric acid (HCI), which is an acid, with a mass of 0.7302 g is dissolved in water and used to standardize a solution of barium hydroxide. An endpoint is reached when 47.81 mL of barium hydroxide has been added. Determine the molarity (in mol/L) of the barium hydroxide solution. Report your answer to four significant figures. Submit Answer Tries 0/13 2. The standardized barium hydroxide solution is then used to titrate 13.86 mL of a solution...
Use the vapour pressures (at 25 °C) of the pure substances below to answer the following questions р* (КРa) Substance 3-methyl-1-butanol (C5H120) 0.315 ethyl formate (C3H602) 32.3 1. Determine the partial pressure (in kPa) of ethyl formate (C3H602) in the vapour phase (at 25 °C) over a solution for which the mole fraction of 3-methyl-1-butanol (C5H120) is 0.322. Report your answer to three significant figures in scientific notation. Tries 0/13 Submit Answer 2. A solution of 3-methyl-1-butanol (C5H120) and ethyl...
Calculate the standard enthalpy change, ΔΗ0rn, în k] for the following chemical equation, using only the thermochemical equations below. Please Go Over This Question In etail 12NH3(aq) 1502(9)12NOg)18H200) Report your answer to three significant figures in scientific notation. Equations: 1/2N2(g) 1/202(g) NO(g) 1/2N2(g) O2(9) NO2(9) 4NH3(g) + 7O2(g) → 4NO2(g) + 6H20(1) 90.4 33.8 -1326.2 Submit Answer Incorrect. . Tries 2/99 Previous Tries Submissions to practice problems are not permanently recorded
Calculate the standard enthalpy change, ΔΗ0rn, în k] for...
0.741 V You are correct. Your receipt no. is 156-8240 Previous Tries 2. Determine Ecell (in V) at 298.15 K for a cell composed of a Ti electrode in a solution of 0.372 M + coupled to a platinum electrode in a solution where the [H] is 0.984 M and the partial pressure of Hy is 1.500 atm. Report your answer to three decimal places in standard notation (I.e. 1.234 V).
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give signals of 1.10, 1.90, 1.20, 1.30, 1.60, 1.70, and 1.70 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the standard deviation of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the minimum detectable concentration (detection limit in ppm) with appropriate...
A 1.00 L flask is filled with 1.10 g of argon at 25 °C. A sample of ethane vapor is added to the same flask until the total pressure is 1.400 atm Part A What is the partial pressure of argon, PAr, in the flask? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) HA PAr0.727 atm Previous Answers Submit Incorrect; Try Again Part B What is the partial pressure of ethane, Pethane, in...
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