Select the TWO variables that are held constant when testing Boyle's Law in a manometer.

pressure
temperature
volume of gas
mass of gas
atmospheric pressure

Question

Select the TWO variables that are held constant when testing Boyle's Law in a manometer.

pressure
temperature
volume of gas
mass of gas
atmospheric pressure

anonymous · Answer

Temperature & mass keep constant 
Volume and pressure are variable.

photon336 · Answer

Start with the ideal gas law. 
$$pV = nRT $$

Boyle's law studies how pressure and volume are related. so that means that nRT is a constant, meaning that the number of moles and the temperature are constants. 

$$PV = nRT =k $$


In boyle's law we study how pressure and volume are related. 

$$P_{1}V_{1} = P_{2}V_{2}$$