- #1

teggenspiller

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## Homework Statement

The temperature of a fixed mass of gas drops from 127 C to 27 oC under constant pressure. Find the ratio of the new volume to the original volume.

C. 3:4

D. 4:3

E. 1:1

A and B arent here because i have gotten them wrong.

## Homework Equations

Ideal gas law: PV= nRT

Pressure in Pa, Volume in Liters, n as in moles, R is a constant (0.0821) T= Temp Kelvin

Looking for the ratio of the final V to the initial V

## The Attempt at a Solution

P= constant, n= constant, R= constant, so V= nRT/P and if p, n and R are constant then V just = T then right?

so V/T= V/T

And V/ 127 = V/27

what do i do here? 127/27 = 4.7

how do i get a 'ratio'?? between the two?