I'm confused with these two questions. Please help. 1.) What conclusions can you make about the relationship between the volume of a gas and its

I'm confused with these two questions. Please help.

1.) What conclusions can you make about the relationship between the volume of a gas and its pressure?

2.)What possible variables have you not accounted for? As you did the procedures, is it possible that theatmospheric pressure may have changed? If it did change over the course of your experiment, then howwould your results have been affected