A sample consisting of 3.0 mol of perfect gas molecules with Cvm. 3R/2 which is initially at and 299 K and 250 kPa undergoes a reversible adiabatic compression until its pressure reaches 380 kPa. (a) Calculate the final temperature, T, of the gas (in K). (b) Calculate the final volume, V, of the gas. (c) Calculate the work done, w (in J).
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- When 2.9 mol N2 is heated at a constant pressure of 3.00 atm, its temperature increases from 298 K to 345 K. Given that the molar heat capacity of N2 at constant pressure is 29.125 J K-1mol-1, calculate ΔU. answer in kJ.When, a volume of 200 cm3of Lithium hydroxide solution of concentration 1.00 mol/dm3and 200 cm3of Hydrochloric acid of concentration 100 mol/dm3 were mixed together in acalorimeter the reaction was investigated to be exothermic. Based on the information given above in question one (1), calculated the enthalpychange per mol of water produced, if the heat capacity of the calorimeter was 76 J/Kand the temperature rise was 5.25 K. (State any assumptions made)Given the following information: Chemical Reaction: 2 C10H10 (l) + 25 O2 (g) → 20 CO2 (g) + 10 H2O(l) ∆H = 10,314 KJ/mol The standard heat of formation (KJ/mol) at 298.15 oC : CO2 = -393.5 ; H2O(l) = -285.8 What is the standard enthalpy of formation of C10H10?
- Two dm3 of N2 gas at 0oC and 500 kPa pressure are expanded isothermally and reversibly until the confining pressure is 100 kPa. Assuming the gas to be ideal, calculate (a) the final volume of the gas, (b) the work done, (c) the heat absorbed, (c) the internal energy change, and the enthalpy change for this process. Answer: [ 10.0 dm3 ; -1.61 kJ; 1.61 kJ; 0 j; 0 J]]In a calorimetry experiment similar to the one performed today, a student used 50.0 ml of 1.0 m NaOH and 5.0 ml of 1.0 m HCL each initially at 22.5ºC. The max temp observed after mixing was 28.0º C. What is the heat of reaction in units of kJ ?How many kJ of energy need to be added to 50.00 g of Br2 (liq) to raise the temperature of the sample by 5.0 K? The MW of Br2 is 159.81 g/mol. See the Exam 3 handout for the molar heat capacity of liquid Br2.
- The standard molar enthalpy of formation of molecular oxygen at 298 K is zero. What is its value at 315 K? Cp value is 29.4Calculate ∆Hrxn in kJ/mol of NaOH, if the initial temperature is 25.00 oC and the final temperature is 31.22 oC, when 100 mL of 1.000 M NaOH is mixed with 100 mL of 1.000 M of HCl. (Heat capacity = 4.184 J/ °C.g, density of solution = 1.01 g/mL)A 170.0g sample of metal at 83.00 degrees is added to 170.0g of H2O(l) at 15 degrees in an insultaed container. The temperature rises to 18.16 degrees. Neglecting the heat capacity of the container, what is the specific heat capacity of the metal? The specific capacity of H2O(l) is 4.18J/(g. degree C). Please break down in simple terms with formulas for the whole equation
- SHOW CLEAR SOLUTION: To a test tube containing 10.0 ml of 0.50 M HCl solution in a calorimeter, 0.05482 g of solid MgO (MW = 40.30 g/mol) at the same temperature was added. A change in temperature of 6.2°C was recorded. In a separate experiment, the heat capacity of the calorimeter was determined to be 0.293 kJ/°C. D. Calculate the experimental ΔHrxn (in kJ/mol) for the reaction between MgO andHCl.E. If the theoretical ΔHrxn of the reaction between MgO and HCl is -1349 kJ/mol, calculate the %error.a) A glass of water at 278 K (system) is placed in a microwave oven and the ovenis started and at this time begins to boil. Which of q, w, and hangU is positive, negative oris it zero?b) What is wrong with the following statement: Burns caused by steam at 100ºC,May be more severe than burns from water at 100ºC because steamContains excess heat. Rewrite the sentence to accurately convey the same information.c) 3.00 moles of ideal gas is contained in an adiabatic reciprocating cylinder arrangement. Ti =It has an initial temperature and pressure of 298 K and Pi = 1.00 bar (CV, m = 3/2 R). 20.0 cmThe gas is compressed by placing a mass of 625 kg on the piston with a diameter of 625 kg. During this processCalculate the work done and the distance traveled by the piston. The mass of the piston is negligibleassume that.XXXXXX I just need c parta) A glass of water at 278 K (system) is placed in a microwave oven and the ovenis started and at this time begins to boil. Which of q, w, and hangU is positive, negative oris it zero?b) What is wrong with the following statement: Burns caused by steam at 100ºC,May be more severe than burns from water at 100ºC because steamContains excess heat. Rewrite the sentence to accurately convey the same information.c) 3.00 moles of ideal gas is contained in an adiabatic reciprocating cylinder arrangement. Ti =It has an initial temperature and pressure of 298 K and Pi = 1.00 bar (CV, m = 3/2 R). 20.0 cmThe gas is compressed by placing a mass of 625 kg on the piston with a diameter of 625 kg. During this processCalculate the work done and the distance traveled by the piston. The mass of the piston is negligibleassume that