This paper here: http://www.ocr.org.uk/Images/243745-...nian-world.pdf
Question 6 part c, in the mark scheme to solve this question you need to state that
Pressure = mass/volume,
number of moles = mass/molecular mass
and then rearrange and substitute them into the ideal gas equation to get the answer required. However what is confusing me is that isn't density = mass/volume. So where does the statement pressure = mass/volume come from?
Could anybody explain this, would be greatly appreciated as my exam is tomorrow.
Mark scheme: http://www.ocr.org.uk/Images/236084-...world-june.pdf
Thanks a lot if anybody can help with this
OCR Newtonian World - Ideal Gases, June 2014 Q6 Watch
- Thread Starter
- 20-06-2016 11:37
- 20-06-2016 14:00
It's not pressure = mass / volume it's density = mass / volume (i.e. rho not P)
- 21-06-2016 12:35
Yup, for the scheme you posted, it shows density. Are you using an up to date adobe reader to view this pdf file?