## anonymous one year ago 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.

1. Rushwr

we know for a fixed volume the no. of moles is also fixed. SO in PV=nRT equation V , n and R is constant ( R is universal gas constant so it is anyways constant ) So we can say that $P \alpha T$ Pressure is directly proportional to the temperature. $\frac{ P _{1} }{ T _{1} }= \frac{ P _{2} }{ T _{2} }$

2. anonymous

3. Rushwr

So use one set of known of data and the unkonwn set like this ! P1/T1=P2/T2 So let's say that the unknown pressure is P1 then P1= P2 x T1 /T2

4. Rushwr

If we use the 1st set of data given ! P1= ? T1= 150 C P2 = 726 T2 = 10

5. Rushwr

Did u get it ?

6. anonymous

yes thanks