i dont know how to remove my answer so ignore this
Answer:
4.17L
Explanation:
V1 = 10L
V2 =?
P1 = 500torr
P2 = 1200torr
Boyle's law states that at constant temperature, the volume of a gas is inversely proportional to its pressure.
P1V1 = P2V2
V2 = ( P1 * V1 ) / P2
V2 = 4.17L
The new volume of the gas is 4.17L
Light does not travel at a constant speed in a vacuum, compared to in air, because the light is being absorbed by atoms and molecules in the air. But light does travel at a constant speed in a vacuum.
So I agree with A
All that talk about moving forward is irrelevant (I think)