A student collected the following data for a fixed volume of gas:
Temperature (C) Pressure (mm of Hg)
10 726
20 750
40 800
70 880
100 960
150 ???
First off, I'm not quite sure how I would make the temperature into an equation to find out the pressure. Most of the gas laws don't really tell much. I don't want the answer, just a simple guidance into finding out the answer.

Question

A student collected the following data for a fixed volume of gas:
Temperature (C)	Pressure (mm of Hg)
10	                          726
20	                          750
40	                          800
70	                          880
100	                          960
150	                           ???
First off, I'm not quite sure how I would make the temperature into an equation to find out the pressure. Most of the gas laws don't really tell much. I don't want the answer, just a simple guidance into finding out the answer.

aaronq · Answer

PV=nRT

since the volume is fixed, n is fixed (i'm assuming the amount is as well), and R is a constant

were left with P=T.  SO tthey are proportional.

Practically, what you wanna do to solve this is graph it, use the equation from the resulting line to extrapolate the pressure.

grimesssz · Answer

@aaronq so, I had made a proportional equation from the previous equation such as:$$\frac{100}{960}=\frac{150 }{ x }$$ and i had cross multiplied 960*150 and then divided with 100 which resulted in 1,440 and it seems right to me but i'm not sure.....

aaronq · Answer

that would give you a good estimate, but a better estimate is if you plot all the data then use the equation of best fit.