Results 1 to 2 of 2

Math Help - chemistry/math: gas equations

  1. #1
    Junior Member
    Joined
    Nov 2008
    From
    San Diego
    Posts
    40

    chemistry/math: gas equations

    A gas sample at 23 degrees C occupies a volume of 14 L. At what temperature will it occupy 25 L?

    I started by converting C to K. So 23 degrees C = 296 K.

    Then I plugged the values into the equation:
    V1/T1 = V2/T2

    Since I am looking for T2 I change it to:
    T2 = V1/T1V2

    When I plug numbers in I get:

    14L/(296 K)(25L) = 0.00189 K

    Is this right? It doesn't seem right because the temperature is so low. Can anyone help me? Thanks sooo much.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,407
    You just messed up your algebra:

    \begin{aligned} \frac{V_1}{T_1} & = \frac{V_2}{T_2} \\ V_1 T_2 & = V_2 T_1 \qquad \text{Cross multiplied} \\ T_2 & = \frac{V_2 T_1}{V_1} \\ T_2 & = \frac{(25 L)[ (23 + 273 ) K]}{14 L} \end{aligned}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Math problem but from Chemistry class..
    Posted in the Algebra Forum
    Replies: 3
    Last Post: September 20th 2010, 11:43 PM
  2. chemistry/math solution stoichiometry
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: November 17th 2008, 07:20 PM
  3. chemistry/math problem
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: November 13th 2008, 04:30 AM
  4. advanced math in organic chemistry?
    Posted in the Advanced Applied Math Forum
    Replies: 4
    Last Post: August 3rd 2008, 04:05 AM
  5. Replies: 10
    Last Post: April 28th 2007, 05:00 PM

Search Tags


/mathhelpforum @mathhelpforum