Question

When 1 mol of a gas burns at constant pressure, it produces 2453 J of heat and does 7 J of work. Determine ΔH and q for...

When 1 mol of a gas burns at constant pressure, it produces 2453 J of heat and does 7 J of work.

Determine ΔH and q for the process. Express your answer as an integer and include the appropriate units..

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Since heat is evolved during the reaction(burning), the reaction is exothermic. So ΔH value is negative.

ΔH = -2453 J

Further, ΔHq at constant pressure, Since again reaction is exothermic, q is negative

q = -2453 J

Add a comment
Know the answer?
Add Answer to:
When 1 mol of a gas burns at constant pressure, it produces 2453 J of heat and does 7 J of work. Determine ΔH and q for...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • When 1 moof a gas burns at constant pressure, it produces 2418 Jof heat and does...

    When 1 moof a gas burns at constant pressure, it produces 2418 Jof heat and does 4 kjof work. Part A Identify a dor the process. Express your answer using one significant figure. kJ Submit Request Answer - Part B Identity a for the process Express your answer using four significant figures. RACI Submit Request Answer - Part Identify yfor the process. Express your answer using four significant figures. ACP kJ Submit Request Answer - Part D Identify wfor the...

  • Lighters are sometimes fueled by propane (C3H8C3H8). When 1 mole of propane burns at constant pressure,...

    Lighters are sometimes fueled by propane (C3H8C3H8). When 1 mole of propane burns at constant pressure, it produces 2096 kJkJ of heat and does 3 kJkJ of work. Part A What is the value of ΔHΔH for the combustion of one mole of propane? Express your answer as an integer. ΔHΔH = nothing kJkJ SubmitRequest Answer Part B What is the value of ΔEΔE for the combustion of one mole of propane? Express your answer as an integer.

  • A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following...

    A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 822 J of heat from its surroundings and has 0.69 kJ of P−V work done on it by its surroundings. What is the value of ΔH for this process? Express your answer with the appropriate units.

  • A gas is confined to a cylinder under constant pressure. When 450. J of heat is...

    A gas is confined to a cylinder under constant pressure. When 450. J of heat is added to the gas, it expands and does 95 J of work on the surroundings. What are the values of AH and AE for the process? 3.

  • An ideal gas expands at a constant total pressure of 2.9 atm from 500 mL to...

    An ideal gas expands at a constant total pressure of 2.9 atm from 500 mL to 710 mL . Heat then flows out of the gas at constant volume, and the pressure and temperature are allowed to drop until the temperature reaches its original value. A) Calculate the total work done by the gas in the process. Express your answer to two significant figures and include the appropriate units. W = ________ B) Calculate the total heat flow into the...

  • Heat, q, is energy transferred between a system and its surroundings. For a process that involves...

    Heat, q, is energy transferred between a system and its surroundings. For a process that involves a temperature change q=m⋅Cs⋅ΔT where Cs is specific heat and m is mass. Heat can also be transferred at a constant temperature when there is a change in state. For a process that involves a phase change q=n⋅ΔH where, n is the number of moles and ΔH is the enthalpy of fusion, vaporization, or sublimation. The following table provides the specific heat and enthalpy...

  • (b) The constant-pressure heat capacity of a sample of 1 00 mol of a perfect gas...

    (b) The constant-pressure heat capacity of a sample of 1 00 mol of a perfect gas was found to vary with temperature according to the expression Cp/(J K)20 17 + 0 4001 (TK) Calculate q, w, AU and AH when the temperature is raised from 0°C to 100°C ) at constant pressure (u) at constant volume (10) (b) The constant-pressure heat capacity of a sample of 1 00 mol of a perfect gas was found to vary with temperature according...

  • An experimenter adds 970 J of heat to 1.75 mol of an ideal gas to heat it from 10.0°C to 26.4 °C at constant pressure

    An experimenter adds 970 J of heat to 1.75 mol of an ideal gas to heat it from 10.0°C to 26.4 °C at constant pressure. The gas does 239 J of work during the expansion. You may want to review (Page). For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Cooling your room.Part A  Calculate the change in internal energy of the gas. Part B Calculate y for the gas. Enter your answer numerically. 

  • An ideal gas expands at a constant total pressure of 3.0 atm from 450 mL to...

    An ideal gas expands at a constant total pressure of 3.0 atm from 450 mL to 850 mL . Heat then flows out of the gas at constant volume, and the pressure and temperature are allowed to drop until the temperature reaches its original value. Part A Calculate the total work done by the gas in the process. Express your answer to two significant figures and include the appropriate units. Part B Calculate the total heat flow into the gas....

  • A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following...

    A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 822 J of heat from its surroundings and has 0.69 kJ of P−V work done on it by its surroundings. What is the value of ΔE for this process? Express your answer with the appropriate units.

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT