chemistry!

An ideal gas has a volume of 3.0 L. If the number of moles of gas and the temperature are doubled, while the pressure remains constant, what is the new volume?

  1. 👍 0
  2. 👎 0
  3. 👁 213
asked by jenny
  1. Pick a T (in Kelvin), number of moles, and pressure, calculate V using PV = nRT. Then double N and T and recalculate V.

    1. 👍 0
    2. 👎 0
    posted by DrBob222
  2. I just pick any? Don't I have to put 3.0 L in the equation?

    1. 👍 0
    2. 👎 0
    posted by jenny
  3. I thought it would be simpler and you could see how much it increased from one set of data to another.
    To use 3L, Use PV = nRT
    Set P =1, V = 3, solve for n, use R as 0.08206 and T = 200 (any T will do).
    solve for n, the double n, and double T, and solve for V.

    The easiest way to do it, logically, is
    PV = nRT
    use P = 1 and V = 3, then
    V = nRT.
    3 = nRT. Call n = 1, R is a constant, call T = 1, then 3 = R. Now double n to 2, T to 2 and substitute
    V = 2*R*2 = 4V
    V was 3 so it is now 12.
    Now matter how you set up the numbers, you will always come back to 12 L for the answer.

    1. 👍 0
    2. 👎 0
    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A tank with a constant volume of 3.44 m3 contains 14 moles of a monatomic ideal gas. The gas is initially at a temperature of 300 K. An electric heater is used to transfer 52600 J of energy into the gas. It may help you to recall

    asked by Leul on February 9, 2016
  2. Physics

    A cylinder with a movable piston contains 14 moles of a monatomic ideal gas at a pressure of 2.26 × 105 Pa. The gas is initially at a temperature of 300 K. An electric heater adds 52600 J of energy into the gas while the piston

    asked by Billy on February 9, 2016
  3. Chem

    a container of 2.00 moles of an ideal gas as 1000 K undergoes a constant pressure and volume process in which the number of moles is increased to 5moles. what is the final temperature of the gas. How do I start this? Do I somehow

    asked by Don on November 30, 2010
  4. Gen chem II

    Calculate the work done when 50.0g of tin dissolves in excess acid at 1.00atm and 25 (degree in celsius) Sn(s)+2H(aq)----- Sn(aq) +H2(g) Assume ideal gas behavior The work done = (pressure)*(increase in volume) The increase in

    asked by Farzan on March 5, 2007
  5. Physics

    Consider an ideal gas enclosed within a container with a moveable piston and a valve through which additional ideal gas can be added to the container. Which one of the following actions may not result in an increase in pressure?

    asked by Sam on July 20, 2014
  6. physics

    If 8.00 moles of a monatomic ideal gas at a temperature of 260 are expanded isothermally from a volume of 1.08 to a volume of 4.14 .Calculate the work done by the gas.Calculate the heat flow into or out of the gas.If the number of

    asked by demitri on December 9, 2010
  7. chem

    Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K? 2. An unknown volume of chlorine gas (Cl2) is resting at 127 °C at a of pressure 152.4 kPa. If the gas weighs 191.4 g, what is the

    asked by theresa on February 22, 2015
  8. Physics

    An ideal gas starts in state A at temperature T. The gas expands to new volume V by an adiabatic process and its final temperature is T′. What is the relationship between T and T′? A) T < T′ B) T > T′ C) T = T′ D) The

    asked by Tim on September 9, 2015
  9. Physics

    A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 28.5 atm to 5.30 atm. Assume the volume of the tank and the

    asked by Stacy on November 5, 2010
  10. Physics

    A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.9 atm to 4.80 atm. Assume the volume of the tank and the

    asked by idwsh on November 5, 2010
  11. physics

    A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.80 atm. Assume the volume of the tank and the

    asked by Meagan on December 13, 2014

More Similar Questions