Four kilograms of carbon dioxide (CO2) is contained in a piston-cylinder assembly with a constant pressure of 2 bar and initial volume of 1m³. Energy is transferred by heat to the CO2 at a rate of 15 W for 2.5 hours. During this process, the specific internal energy increases by 10 kJ/kg. If no change in kinetic and potential energy occur. determine: (a) The heat transfer, in kJ. (b) The final volume, in m³.

Four kilograms of carbon dioxide (CO2) is contained in a piston-cylinder assembly with a constant pressure of 2 bar and initial volume of 1m³. Energy is transferred by heat to the CO2 at a rate of 15 W for 2.5 hours. During this process, the specific internal energy increases by 10 kJ/kg. If no change in kinetic and potential energy occur. determine: (a) The heat transfer, in kJ. (b) The final volume, in m³.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter12: Thermodynamic Processes And Thermochemistry

Section: Chapter Questions

Problem 18P

See similar textbooks

Similar questions

a sample of 98g of pure sulfuric acid is dissolved in 2.0 kg of water in an insulated vessel at 15°C, and thetemperature rises rapidly because of the process of forming the solution. The reaction is summarized in theequation H2SO4(l) -> H+(aq) + HSO4 –(aq). Estimate the temperature change assuming that the heat capacityof the solution is 4.0 J/gK and the heat capacity of the vessel is 300 J/K.
A gaseous fuel mixture contains 23.4 %% methane (CH4)(CH4), 40.1 %% ethane (C2H6)(C2H6), and the rest propane (C3H8)(C3H8) by volume. Part A When the fuel mixture contained in a 1.51 LL tank, stored at 746 TorrTorr and 298 KK, undergoes complete combustion, how much heat is emitted? (Assume that the water produced by the combustion is in the gaseous state.) Standard Enthalpies (or Heats) of Formation (ΔfH∘ΔfH∘) at 298 KK Formula ΔfH∘kJmol−1ΔfH∘kJmol−1 CH4(g)CH4(g) −−74.6 C2H6(g)C2H6(g) −−84.68 C3H8(g)C3H8(g) −−103.85 O2(g)O2(g) 0.0 CO2(g)CO2(g) −−393.5 H2O(g)H2O(g) −−241.8 Express your answer to three significant figures and include the appropriate units.
Nitroglycerin (C3H5N3O9), a liquid at room temperature (25 oC) and atmospheric pressure (1.01325 x 105 Pa) is used to relieve angina. It may undergo decomposition under these same conditions to form nitrogen, carbon dioxide, oxygen and water, with an enthalpy of decomposition of -1541 kJ mol-1The standard enthalpies of formation of water and carbon dioxide are -285.9 kJ mol-1 and -393.5 kJ mol-1 respectively Calculate the work done when 1.0 mole of nitroglycerin decomposes and additionally explain the significance of the sign.
A typical human produces about 10 MJ of energy transferred as heat each day through metabolic activity. (a) If a human body were an isolated system of mass 65 kg with the heat capacity of water, what temperature rise would the body experience? (b) Human bodies are actually open systems, and the main mechanism of heat loss is through the evaporation of water. What mass of water should be evaporated each day to maintain constant temperature?
A laboratory animal exercised on a treadmill, which, through pulleys, raised a mass of 200 g through 1.55 m. At the same time, the animal lost 5.0 J of energy as heat. Disregarding all other losses and regarding the animal as a closed system, what is its change in internal energy?
The sun supplies about 1 kilowatt(s) of energy for each square meter of surface area (1 kW/m2kW/m2, where a watt = 1 J/sJ/s). Plants produce the equivalent of about 0.19 gg of sucrose (C12H22O11C12H22O11) per hour per square meter.
A rigid insulated tank is divided into 2 equal compartments by athin rigid partition. One of the compartments contains air, assumedto be an ideal gas at 800 kPa and 250◦C. The other compartment isunder a vacuum. The partition is suddenly broken and the air rushesinto the evacuated compartment. The tank pressure and temperatureeventually equilibrate. (a) what is the final temperature of the gas ◦C?(b) what is the final pressure, kPa?(c) how much work is done by the system, kJ/kg?(d) how much heat is transferred to the system kJ/kg
a) A 1.60 dm3 sample of a mixture of methane gas, CH4 and oxygen gas, measured at 25 oC and 101 kPa, was allowed to react in a bomb calorimeter in which, had a heat capacity of 5.30 kJ/K altogether with its contents. The complete combustion of the methane gas to carbon dioxide gas and water caused a temperature rise in the calorimeter of 6.28 K. Given that ∆Ho c (CH4) is -560 kJ/mol. i. Define the standard enthalpy of combustion of methane ii. Write a thermochemical equation for the combustion of methane iii. Knowing the ∆Ho c of methane, calculate the number of mole of methane in the mixture. iv. Calculate the total moles of gases in the calorimeter.
Nitroglycerin (C3H5N3O9), a liquid at room temperature (25 oC) and atmospheric pressure (1.01325 x 105 Pa) is used to relieve angina. It may undergo decomposition under these same conditions to form nitrogen, carbon dioxide, oxygen and water, with an enthalpy of decomposition of -1541 kJ mol-1.The standard enthalpies of formation of water and carbon dioxide are -285.9 kJ mol-1 and -393.5 kJ mol-1 respectively. Determine the standard enthalpy of formation of 1.0 mole of nitroglycerin.
A metal sample weighing 43.5g and at a temperature of 100.0c was placed in 39.9g of water in a calorimeter at 25.1c. At equilibrium the temperature of the water and metal was 33.5c. Determine the specific heat capacity of the metal.
In constant pressure calorimeter 75.0 ml is mixed with 1.25 M Hydrocloric acid solution is mixed with 75.0 ml of 1.25 M Sodium hydroxide solution. the density of the final solution is 1.00g/ml and the the solution both initially 21.45c, reach a maximum temperature of 28.32c when mixed. based on this information, and estimating the solution's heat capacity as 4.18Jg-1c-1, what is the amount of heat in Kilojoules, transferred in this reaction?
Given that AgNO3 is -124.4 kJ/mol, at standard conditions, find the dH when 56g of AgNO3 (M = 169.9 g/mol) reacts. If the heat involved (derived from answer a) is transferred without loss to 100.0g of water at 25ºC. what is the final temperature of the water (CH2O = 4.18J/gºC)?