Thermodynamics Part 2

A bakelite beaker has volume capacity of 500 ccat 30°C. When it is partially filled with Vm volume(at 30° ) of mercury, it is found that the unfilledvolume of the beaker remains constant astemperature is varied. If γ(beaker )=6×10−6‌°C−1 andγ(mercury )=1.5×10−4‌°C−1, where γ is thecoefficient of volume expansion, then Vm (in cc) is close to _____.