A scientist observed the changes in a gas pressure of one mole of gas...

a scientist observed the changed in a gas pressure of one mole of gas in a sealed chamber with a fixed volume. Explain the cause of the changes..

may you please help me out with this? i know its the tempertaure of the chamber that the scientist would need to check but im having trouble explaining it..any one able to help me out?

It sounds like there could be information missing? the temperature is a good guess though. Can you just say he would check the temperature?