A student collected the following data for a fixed volume of gas:

Question

Temperature (C) Pressure (mm of hg)
10 726
20 750
40 800
70 880
100 960
150 ???

Fill in the missing data point. Show all calculations leading to an answer.

Answer 1

I think the proper way to do this is to graph the data and extrapolate to 150 C. If you want to do it by a non-graphical method do this.
First, determine the k for P1/T1 = k.
726/283 = 2.565
750/293 = 2.56
800/313 = 2.56
etc to the end.
Average all of those k values, then
k*T = P or k(avg)*423 = P(expected).
I have estimated 1085 mm Hg pressure but you should use your calculations and not mine. .