Charles' Law/Boyle's Law Gas Problems?

Can anyone help me with these? I got my answer but I don't know if I did it right

An aerosol can with a volume of 325mL contains hair spray at 445kPa and 12 degrees C. What volume would the gas occupy if it was allowed to escape at 101kPa and at 21 degrees C?

Update:

I forgot the other one:

For the combustion of pentane:

a) Complete the balanced equation.

b) If 250L of pentane at STP was combusted, what volume of carbon dioxide would be produced at 25 degrees C and 99.9kPa?

4 Answers

Relevance
  • 1 decade ago
    Favorite Answer

    (V1*P1)/T1 = (V2 *P2)/T2

    (325ml * 445kPa)/(273 + 12) = (V * 101kPa)/(273 + 21)

    507.46 = (V * 101)/294

    101V = 149192.11

    V = 1477.15ml

    ____________________________________

    here is to your combustion of pentane:

    a. C5H12 + 8 02---------->5 CO2 + 6 H20

    b. (V1*P1)/T1 = (V2 *P2)/T2

    (250L*101.3kPa)/273 = (V * 99.9kPa)/(273 + 25)

    92.77 = (99.9V)/298

    27,644.14 = 99.9V

    V = 276.72L

  • 1 decade ago

    pV/T is constant, so determine the constant value first, then reverse the equation and determine V (V = (T/p) × constant)

    (445 × 325)/(12 + 273) = 144625/285 kPa mL K^-1.

    Now plug in the new values.

    V = [(273 + 21)/101] × (144625/285) = 1477.150 mL

    a) C5H12 + 8O2 -> 5CO2 + 6H2O

    b) Use pV/T = constant again. I'm not sure about the STP definition you use, apparently the IUPAC definition has changed since I needed it.

  • Erika
    Lv 4
    4 years ago

    Cavalier King Charles Spaniels do shed, yet they don't shed excessively. Cavaliers do no longer have an undercoat so the laying off is extra like man or woman hairs. properly bred cavaliers are commonly expensive dogs. they does no longer do properly outdoors so it ought to finally end up being an truly expensive try of your hypersensitive reactions. Animals are not any more hypo-allergenic. No dogs is one hundred% hypersensitive reaction loose.

  • Anonymous
    1 decade ago

    Taryn, i think you should not do chemistry anymore, seeing as it does not help you in any way aha, jk.

    if i could i would help you buttt i cant.

    sorry im not a good friend in that categorie, but i do think we could talk about it over a nice baked potato.hmm?

    Source(s): brain smart.
Still have questions? Get your answers by asking now.