Below is the data from a gas law experiment comparing the pressure and the volume of a gas at a given temperature.
Pressure (atmospheres)
Volume (L)
0.1300
172
0.2500
89
0.3000
74
0.5000
45
0.7500
29
1.000
22
Which graph best shows the relationship between pressure and volume?

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.