[sidbarreth]

I have a really simple question and i am having trouble getting an answer for it:
the concentration of CO2 in closed box is 180ppm, the total gas pressure is around 100 Torr or 0.131 atmospheres. what would the CO2 concentration be if the total pressure were 760 Torr (1atm)? is it still 180ppm or is it 7.6 x 180ppm? the box volume does not change.

Sid