-- Posted by Daydreamerangel at 1:54 pm on June 15, 2012 Calculate the work done when  8g of Helium expands from 5 dm3 to 12 dm3 against a constant pressure of 0.5 atmospheres -- Posted by Heartfull at 1:56 pm on June 15, 2012 havent you got the equation for that? http://www.bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/forces/workpowerrev1.shtml -- Posted by Daydreamerangel at 2:05 pm on June 15, 2012 Quote: from Heartfull at 8:56 pm on June 15, 2012 havent you got the equation for that?   http://www.bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/forces/workpowerrev1.shtml I'm doing this at a degree level so those equations cant be used they are too basic, thanks though -- Posted by unroll at 4:38 pm on June 15, 2012 W = int(p*dV) pressure is constant so you can trivially integrate the change in volume -- Posted by Daydreamerangel at 9:52 am on June 18, 2012 Thank youuu