A Small Gas Cylinder of Helium Used in Chemistry Lecture

A small gas cylinder of helium used in chemistry lecture demonstrations has a volume of 275 mL at a pressure of 1823 kPa at 24.7°C. Use this information to answer
-The volume of helium, in mL, needed to fill the cylinder at 772 torr and 24.7°C is:

A) 45.9 mL
B) 303 mL
C) 4.87 x 10³ mL
D) 4.95 x 10⁴ mL
E) 4.86 x 10⁵ mL