A Glass Flask Has a Volume of 500 ML at a Temperature

Multiple Choice

A glass flask has a volume of 500 mL at a temperature of 20° C. The flask contains 492 mL of mercury at an equilibrium temperature of 20°C. The temperature is raised until the mercury reaches the 500 mL reference mark. At what temperature does this occur? The coefficients of volume expansion of mercury and glass are 18 ×10^-5 K^-1 (mercury) and 2.0 ×10^-5 K^-1 (glass) .

A) 120°C
B) 110°C
C) 100°C
D) 140°C
E) 130°C