Question

1. A student collected the following data for a fixed volume of gas:
Temperature (⁰C) 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

(750-726)/(20-10) = 2.4

(800-750)/(40-20) = 2.5

(880-800)/(70-40) = 2.7

(960-880)/(100-70)= 2.7

slope increasing a bit but 2.7 seems a reasonable guess

slope = (x-960)/(150-100)

(x-960)= 50(2.7)
x = 960 + 135 = 1095