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You will be asked to upload your work for this question at the end of the...
You will be asked to upload your work for this question at the end of the...
You will be asked to upload your work for this question at the end of the test. 25.0 g of ammonium carbamate (NH2CO2NH4, molar mass: 78.07 g/mol) are introduced into an evacuated 250.0 ml flask kept at 25 °C, and the following equilibrium is established: NH2CO2NH4(s) = = 2 NH3(g) + CO2(g) At equilibrium, there are 0.0171 g of CO2 (molar mass: 44.01 g/mol) in the flask. Calculate the value of Kc for this reaction at this temperature. Give your...
IN ILLIULIOL JU_SUN/Lab%20Exams/CHEZ101%2... Submit Answer kJ/mol Tries 0/2 7. Consider the following reactions: A-B AH =...
IN ILLIULIOL JU_SUN/Lab%20Exams/CHEZ101%2... Submit Answer kJ/mol Tries 0/2 7. Consider the following reactions: A-B AH = 272 kJ C-B AH = 36 kJ What is AH for A C ? It is possible that your answer could be either positive or negative. If it is negative, you must include the "minus" sign. Enter your answer as a decimal number. k] Tries 0/2 Submit Answer 8. Consider the following reactions: A + 2B - C + D AH = -224 kJ...
You will be asked to upload your work for this question at the end of the...
You will be asked to upload your work for this question at the end of the exam. Compound A, an alkane, is treated with Clz and light to give two isomeric monochlorinated products, compounds B and C. Compound B is a 1° chloroalkane, and compound C is a 3º chloroalkane. Compound B is treated with a reagent which converts the chloro group into an alcohol group, giving compound D, with the formula CaH100. B - Dis not a reaction we...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat was added? Assume the density of water is 1.00 g/mL and the specific heat capacity of the water is 4.184 J/g°C. Include units and use the correct number of significant figures. Define the terms "exothermic" and "endothermic". What is the sign of AH associated with these two terms? Exothermic: Endothermic
Fill in the Blanks Let's use calorimetry to measure heats of reaction. Suppose you mix 25.0...
Fill in the Blanks Let's use calorimetry to measure heats of reaction. Suppose you mix 25.0 mL of 0.08M cesium hydroxide with 25.0 mL of 0.08M hydrochloric acid. Assume both solutions are at 28.0°C. The temperature of the solution after the reaction is 30.2°C. Because the temperature of the solution went up, the reaction is (endothermic/exothermic). Now compute the heat of the reaction assuming the heat capacities of the solutions are equal to pure water (4.18 J/g°C). Report the Q...
Give the correct formulas of the final products formed in the following reaction. &nb
Give the correct formulas of the final products formed in the following reaction. Al(OH)3 (s) + HNO3(g) ⟶⟶ ⟶⟶ ? How much energy is required to change the temperature of 1.50 L of water from 25.0 °C to 100.0 °C? The specific heat capacity of water is 4.184 J/g·°C; density H2O = 1.0 g/mL; 1000 mL = 1 L Which of the following pairs of aqueous solutions will react to produce a precipitate (an insoluble solid) when...
8. Can two of these molecules hydrogen bond with each other? НН НН YES NO НН...
8. Can two of these molecules hydrogen bond with each other? НН НН YES NO НН Tries 0/2 Submit Answer 9. Can two of these molecules hydrogen bond with each other? НН H-C-C-o-H НН O YES NO Tries 0/2 Submit Answer 10. A chemical reaction was run in 155.0 mL of H2O. During the reaction, the temperature of the H2O changes from 28.4 oC to 57.6 oC. How much heat (in kJ) did the chemical reaction produce? For H2O, Cp=...
QUESTION 6 You dissolve 9.6 g of CuSO4 in 50.00 mL of water in a coffee...
QUESTION 6 You dissolve 9.6 g of CuSO4 in 50.00 mL of water in a coffee cup calorimeter and measure a temperature rise of 10.2 °C. Calculate the enthalpy of dissolution for CuSO4 Report your answer in kl/mol, enter it to one decimal place. If your enthalpy change is positive, do not enter a "+" in front of your answer; if it is negative, however, make sure you include a "-" sign at the beginning of the number.
24 Question (1 point) See page 236 A 70.0 mL sample of 1.0 M NaOH is...
24 Question (1 point) See page 236 A 70.0 mL sample of 1.0 M NaOH is mixed with 43.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 29.8°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is 1.0...
24 Question (1 point) @ See page 236 A 67.0 mL sample of 1.0 M NaOH...
24 Question (1 point) @ See page 236 A 67.0 mL sample of 1.0 M NaOH is mixed with 41.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 27.5°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is...
You will be asked to upload your work for this question at the end of the test. 25.0 g of ammonium carbamate (NH2CO2NH4, molar mass: 78.07 g/mol) are introduced into an evacuated 250.0 ml flask kept at 25 °C, and the following equilibrium is established: NH2CO2NH4(s) = = 2 NH3(g) + CO2(g) At equilibrium, there are 0.0171 g of CO2 (molar mass: 44.01 g/mol) in the flask. Calculate the value of Kc for this reaction at this temperature. Give your...
IN ILLIULIOL JU_SUN/Lab%20Exams/CHEZ101%2... Submit Answer kJ/mol Tries 0/2 7. Consider the following reactions: A-B AH = 272 kJ C-B AH = 36 kJ What is AH for A C ? It is possible that your answer could be either positive or negative. If it is negative, you must include the "minus" sign. Enter your answer as a decimal number. k] Tries 0/2 Submit Answer 8. Consider the following reactions: A + 2B - C + D AH = -224 kJ...
You will be asked to upload your work for this question at the end of the exam. Compound A, an alkane, is treated with Clz and light to give two isomeric monochlorinated products, compounds B and C. Compound B is a 1° chloroalkane, and compound C is a 3º chloroalkane. Compound B is treated with a reagent which converts the chloro group into an alcohol group, giving compound D, with the formula CaH100. B - Dis not a reaction we...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat was added? Assume the density of water is 1.00 g/mL and the specific heat capacity of the water is 4.184 J/g°C. Include units and use the correct number of significant figures. Define the terms "exothermic" and "endothermic". What is the sign of AH associated with these two terms? Exothermic: Endothermic
Fill in the Blanks Let's use calorimetry to measure heats of reaction. Suppose you mix 25.0 mL of 0.08M cesium hydroxide with 25.0 mL of 0.08M hydrochloric acid. Assume both solutions are at 28.0°C. The temperature of the solution after the reaction is 30.2°C. Because the temperature of the solution went up, the reaction is (endothermic/exothermic). Now compute the heat of the reaction assuming the heat capacities of the solutions are equal to pure water (4.18 J/g°C). Report the Q...
8. Can two of these molecules hydrogen bond with each other? НН НН YES NO НН Tries 0/2 Submit Answer 9. Can two of these molecules hydrogen bond with each other? НН H-C-C-o-H НН O YES NO Tries 0/2 Submit Answer 10. A chemical reaction was run in 155.0 mL of H2O. During the reaction, the temperature of the H2O changes from 28.4 oC to 57.6 oC. How much heat (in kJ) did the chemical reaction produce? For H2O, Cp=...
QUESTION 6 You dissolve 9.6 g of CuSO4 in 50.00 mL of water in a coffee cup calorimeter and measure a temperature rise of 10.2 °C. Calculate the enthalpy of dissolution for CuSO4 Report your answer in kl/mol, enter it to one decimal place. If your enthalpy change is positive, do not enter a "+" in front of your answer; if it is negative, however, make sure you include a "-" sign at the beginning of the number.
24 Question (1 point) See page 236 A 70.0 mL sample of 1.0 M NaOH is mixed with 43.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 29.8°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is 1.0...
24 Question (1 point) @ See page 236 A 67.0 mL sample of 1.0 M NaOH is mixed with 41.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 27.5°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is...
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