hi!

Could the answer be D°?

Here is my reasoning:

Using the ideal gas law PV=nRT (with nR constant in this question), we can see P is directly proportional to T, and V is directly proportional to T as well.

Let’s first double P:

2PV=nR2T

Let’s double V:

2P2V=nR4T

So final temperature is -173 * 4 = - 692°C

Does anyone know why i’m not finding + 692°C? Thanks!