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 calculate the work done if this process is carried out in two steps.
1] first let, the gas expand against a constant external pressure of 5.00 atm to a volume of 4.00 L.
2] From there, let the gas expand to 20.0 L against a constant external pressure of 1.00 atm.
w = _____ J

i know that the formula to solve this is w=-(p)(Delta V) but when they give you 2 pressures does that mean the formula turns to w=-(delta p)(delta v)?

  1. 👍 2
  2. 👎 0
  3. 👁 7,414
  1. 1)
    -Pdelta V = -1 atm x (v2-v1) = -1(20-1) = -19 L*atm work.
    The first one is -5 x (4-1) = -15 L*atm
    Second stage is -1 x (20-4) = -16 L*atm
    Total = -31 L*atm
    Here is a good site you can read; in fact there is an example problem that is ALMOST the same as this one.
    (Broken Link Removed)

    1. 👍 5
    2. 👎 2
  2. Thank you Dr. Bob! That was very helpful

    1. 👍 1
    2. 👎 1
  3. No prob. I always help sexy ladies ~

    1. 👍 2
    2. 👎 42
  4. 2=2

    1. 👍 2
    2. 👎 0
  5. yo long D and Dr bob you in for threesome? i need chemistry help help me with my horomones.

    1. 👍 3
    2. 👎 1
  6. im d

    1. 👍 1
    2. 👎 0
  7. I can help with your hormones.

    1. 👍 1
    2. 👎 1
  8. D bob too smooth

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chem

    A sealed container holding 0.0255 L of an ideal gas at 0.989 atm and 71 °C is placed into a refrigerator and cooled to 45 °C with no change in volume. Calculate the final pressure of the gas.

  2. CHEM

    A) a picture shows a container that is sealed at the top by a movable piston. Inside the container is a ideal gas at 1.00atm , 20.0 *C, and 1.00L. (The pic is of a 2L container which has a piston pushed downward to the 1L level.

  3. chemistry

    If I contain 3 moles of gas in a container with a volume of 60 liters and at temperature of 400 K, what is the pressure inside the container? Ideal Gas Law: PV=nRT I know I'm given the volume, temperature, and numbers of moles of

  4. Chemistry

    Container A holds 752 mL of ideal gas at 2.40 atm. Container B holds 179 mL of ideal gas at 4.80 atm. If the gases are allowed to mix together, what is the resulting pressure? Note: Find the partial pressure of each gas in the

  1. physics

    sealed metal container can withstand a pressure difference of 0.630 . The container initially is filled with an ideal gas at 12 and 0.80 To what temperature can you cool the container before it collapses? (Ignore any changes in

  2. physics

    If an ideal gas does positive work on its surroundings, we may assume, with regard to the gas: A. Volume increases B. Internal energy decreases C. Pressure decreases D. Temperature increases E. Pressure increases

  3. chemistry

    The temperature of an ideal gas in a 5.00 L container originally at 1.01 bar pressure and 25 °C is lowered to 220 K. Calculate the new pressure of the gas.

  4. engineering

    You have an ideal gas in an insulated container. You compress it from a pressure of 40 × 105 Pa to 20 × 105 Pa, while increasing the volume from 10 to 20 m3. What is the work you done by the gas 1- 10 J 2- 300 J 3- 500 J 4- 880

  1. Physics

    An ideal gas is sealed within a container at a temperature of 17°C and a pressure of 101 kPa. The container is heated until the temperature of the gas reaches100°C. A valve in the container is then opened to allow gas to escape

  2. physics/chemistry

    (a) An ideal gas occupies a volume of 1.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. i got that right to be 2.5e19 molecules (b) If the pressure of the 1.0 cm3 volume is

  3. Physics Last Question HEEEELLLPPP !

    #1 The internal energy of the gas in a gasoline engine’s cylinder decreases by 295 J. If 47.0 J of work is done by the gas, how much energy is transferred as heat? #2 If an ideal gas does work on its surroundings: a. The

  4. Physics

    A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.

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