A gas occupies a volume of 600.0 mL at a temperature of 25.00 °C. At what temperature would the gas occupy only half this volume?

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

That is a lot of moles that you have