hiya

this is a really horrible q i'd dearly love some advice for.

Q: Gas expands in a space according to a law "P=CV^n"

P is pressure kNm^-2, V is volume m^3, C and n are constants.

an experiment produces these results

P: 100 | 200 | 300 | 400 | 500

V: 0.165 | 0.104 | 0.079 | 0.064 | 0.055

a) explain carefully how you would plot a graph to verify P and V follow a relationship according to the above law; what would be plotted on each axis?

b)supposing a straight line on the graph passes through the first and last data points, find the values of C and n in this example. there is no need to plot an accurate graph here.

I really just need some pointers on how to go about this as I'm utterly flummoxed!!

thanks so so much!