What will the volume of a sample of gas be at STP if it has a volume of 2.34 L at 45°C and 0.984 atm?
The volume will be 2.00 L.
This is an example of a Combined Gas Laws problem.
#color(blue)(|bar(ul((P_1V_1)/T_1 = (P_2V_2)/T_2|)#
We can rearrange this formula to get
#V_2 = V_1 × P_1/P_2 × T_2/T_1#
Your data are:
The volume at STP is 2.00 L.