# A sample of 0.010 mole of oxygen gas is confined at 127°C and 0.80 atmosphere. What would be the pressure of this sample at 27 degrees C and the same volume?

##### 1 Answer

Jan 23, 2017

The pressure will be 0.60 atm.

Since the volume is constant but the pressure and temperature are changing, this is an example of Gay-Lussac's Law:

#color(blue)(bar(ul(|color(white)(a/a)P_1/T_1=P_2/T_2color(white)(a/a)|)))" "#

Your data are:

We can rearrange the above formula to get

The new pressure is 0.60 atm.