CHEM

At constant pressure, which of these systems do work on the surroundings? Check all that apply.

2A (g) + B(s) --> 3C(g)
2A (g) +2B (g) -->5C(g)
A(g)+ B(g) --> C(g)
A (s) +2B(g)--> C(g)

  1. 👍 1
  2. 👎 0
  3. 👁 6,301
  1. If -p(V2-V1) and the system is to do work on the surroundings, doesn't that mean that the gas must expand? So which systems expand?

    1. 👍 0
    2. 👎 0
  2. I think it is only the first one, but it marked me wrong.

    1. 👍 0
    2. 👎 0
  3. sorry i meant the second one. I put the second one and it marked me wrong. As well, I put the last two and it marked me wrong also.

    1. 👍 0
    2. 👎 0
  4. You can select more than one answer and I can't seem to figure it out.

    1. 👍 0
    2. 👎 0
  5. I think the answer(s) is/are A and B.
    A increases (note B is a solid) from 2 moles to 3 moles so that is an expansion. B is an expansion from 4 moles (2+2) to 5 moles C.
    PLEASE confirm when you enter into the database. I like to make sure I'm right. ;-).

    1. 👍 3
    2. 👎 2
  6. Yes! It is right. Thank you for your help. I really appreciate it.

    1. 👍 0
    2. 👎 0
  7. Thank you.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Consider an ideal gas encloesd in a 1.00 L container at an internal pressure of 10.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 20.0 L. w = ____ J now

  2. Chemistry

    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 827 J of heat from its surroundings and has 0.66 kJ of

  3. Science test

    Can someone please help me with science test answers!! Why do scientists use models of natural systems? A- Scientist use models of natural systems because these systems are often too large or too small or too complex to study

  4. homework college chem.

    a sample of gas occupies a volume at 73. 1 mL. As it expands, it does 135.0 J of work on its surroundings at a constant pressure of 783 torr. what is the final volume of gas?

  1. Science

    Which of the following body systems work together to get cells the nutrients they need to carry out cellular respiration? A. the digestive and respiratory systems B. the respiratory and circulatory systems*** C. the digestive and

  2. Chemistry

    In which of the following reactions is work done by the system to the surroundings? A) 2CH3OH(l) + 3O2(g) --> 4H2O(l) + 2CO2(g) B) S(s, rhombic) + O2(g) --> SO2(g) C) 2AgNO3(s) --> 2AgNO2(s) + O2(g) D)4Fe(s) + 3O2(g) --> 2Fe2O3(s)

  3. Chemistry

    Consider these changes. (a) Hg(l)->Hg(g) (b) 3O2(g)->2O3(g) (c) CuSo4*5H2O(s)->CuSO4(s)+5H2O(g) (d) H2(g)+F2(g)->2HF(g) At constant pressure, in which of the reactions is work done by the system on the surroundings? By the

  4. (2-8) Chemistry - Science (Dr. Bob222)

    Which of the following statements is correct? A) The internal energy of a system increases when more work is done by the system than the heat that flows into the system. B) The system does work on the surroundings when an ideal

  1. Check My Answers for Science!

    1: Which of the following is the minimum level of structure needed to perform the function of waste removal? A: Body System B: Tissue C: Cell*** D: Organ 2: Which two systems work with the muscular system to allow the body to

  2. thermodynamic

    Energy is added to a piston-cylinder arrangement. The piston is withdrawn in such a way that the temperature remains constant. The initial pressure and volume are 200 KPa and 2m^3, respectively. If the final pressure is 100 KPa,

  3. Thermodynamic

    One mole of CO2 is to be compressed adiabatically from 1 bar and 25 C. Because of irreversibilities and poor design of the compressor the compressor work required is found to be 25 %greater than that for a well-designed

  4. Chemistry

    A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of

You can view more similar questions or ask a new question.