Given 175 liters of SO3 at 800 torr and 100 degrees C, find the volume at STP, give the mass of the sample and give the number of molecules in the sample.

Can somebody please explain how I figure this out? I'm so lost. :{

  1. 👍 0
  2. 👎 0
  3. 👁 92
  1. I would use
    (P1V1/T1) = (P2V2/T2) and solve for V2 at STP.
    Then use PV = nRT to solve for n = number of moles of the gas. Since n = grams/molar mass, you know n and molar mass, one can solve for grams.
    Finally, you know 1 mole of anything will contain 6.022E23 molecules. Use that piece of information to calculate the number of molecules.

    1. 👍 0
    2. 👎 0
    posted by DrBob222
  2. Thank you SOO much~! :D

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Calculate the resulting pressure if 4.50 liters of nitrogen at 35 degrees Celsius and 790 torr and 3.7 liters of oxygen at 15 degrees Celsius and 750 torr are pumped into a 1.00 liters container at 25 degrees celsius. Assume ideal

    asked by carolann on March 24, 2014
  2. Chemistry check Please

    The question is: Find the following quantities the volume, in liters, of 835 g SO3 at STP My answer is: 1 mol of SO3=80g 835g/80g = 10.44 mols v = (10.44 x 8.314 x 273)/100 = 236 L Can someone tell me if I did it correct. Thanks

    asked by Mike on March 9, 2009
  3. Chemistry 3A

    a 325ml sample of air is at 720 torr and 30.0 degrees Celsius. what volume will this gas occupy at 800 torr and 75.0 degrees Celsius.

    asked by Gurjot on December 4, 2012
  4. chem

    Ammonia gas occupies a volume of 5.00L at 4.00 degrees celcius and 760 torr. what is the volume at 77degrees celcius and 800 torr?

    asked by gina on October 14, 2014


    asked by CHEM CHEM on July 7, 2010
  6. Chemistry

    A gas sample containing only SO3, CH2O and C2H6O2 has the following mass percent composition: 65.1% SO3 and 8.79% CH2O. Calculate the partial pressure (torr) of SO3 if the total pressure of the sample is 4712 torr. Unit conversion

    asked by Luc on March 4, 2010
  7. cdemistry

    A sample of gas collected at 21.0 oC and a pressure of 660.0 torr has a volume of 1.83 liters. What volume in liters will the gas occupy at 38.0 oC under a pressure of 500.0 torr?

    asked by sheshe on March 4, 2011
  8. chemistry

    A gas occupies 10 liters at standard conditions. What volume will it occupy at 20 degrees celsius and 700 torr?

    asked by jake on February 16, 2010
  9. Physics

    Thank you for any help and assistance. Here is the question/problem: Because of the pressure inside a popcorn kernel, water does not vaporize at 100 degrees Celsius. Instead, it stays liquid until its temperature is about 175

    asked by Demi on March 28, 2010
  10. Chemistry

    How many liters of excess reactant would be left when 3.00 liters of nitrogen monoxide is mixed with 2.00 liters of oxygen and allowed to react at 695 torr and 27 degrees Celsius to produce nitrogen dioxide

    asked by Andy on July 26, 2011

More Similar Questions