If the volume of the gas is increased to 9.90 l (at constant temperature), then its pressure will be 373 mmg.
According to Boyle's law, if the temperature of a gas is constant then the volume and pressure of the gas can be in relation to each other at different times.
We are given:
The initial volume of the gas V1 = 4.90 L
The initial pressure P1 = 755 mmg
The final volume of the gas V2 = 9.90 L
The final pressure of the gas P2 = ?
Using Boyle's law equation we can find the final pressure.
The equation is
P1V1 = P2V2
P2 = P1V1/V2
P2 = 755 x 4.90 / 9.90
P2 = 373 mmg
Thus, the final pressure is 373 mmg. Hence we can conclude that as the pressure decreases then volume of gas increases.
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