[Phoebe]

Hello

I'm working on a question that asks me to use the ideal gas equation to calculate the corresponding volume (in litres) of oxygen gas at a standard atmospheric pressure (SATP) of 25degrees Celsius and 100 kPa (1bar)

 - the question relies on a previous calculations of O₂n = 18.49

  T = 25 + 273
     = 298

So Pv=nRT and to solve for V the equation rearranges to V = nRT/P

 18.49 x 8.314 x 298 / 100

    = 45710.306


Just to double check I typed all my working out into an online ideal gas calculator and there I get an answer of 458.128 Litres

Have I forgotten to convert units somewhere?

appreciate any insight

[Vidya]

R value which you have selected is Pa.m3/mol.L
Convert kPa to pascal and then you will get answer in m3
Now convert m3 to L  and you will get right answer.

[Phoebe]

  Ah! Thank you!!! I had forgotten to convert from cm3 to L
 
  Bless the internet and you Vidya

  Thanks so much