Figure 1a shows a pneumatic cylinder containing a trapped sample of air.
The air has an initial pressure of P1 P_1\,P1 and volume V1V_1V1.
Figure 1b shows the same cylinder after the piston has been pushed inward.
The pressure is now P2 P_2\,P2 and the volume is V2V_2V2.
The temperature of the gas remains constant throughout the compression.
Use data from Figure 1a and Figure 1b to calculate the pressure P2 P_2\,P2 of the gas in Figure 1b. Use the equation:
P2=P1×V1V2 P_2 = \frac{P_1 \times V_1}{V_2} P2=V2P1×V1