Please help with the following physics questions

(a) A glass vessel of volume 500 cm is filled to the rim with mercury. Taking into account the expansion of mercury and the glass, how much mercury will overflow the vessel if the temperature of both the vessel and the mercury is raised by 30 "C? [5] Data: The volume expansion coefficient of mercury is 18 x 10" C- and the linear expansion coefficient of glass is 4 x 10-6 .C-1. ( b ) A copper container of mass 0.30 kg contains 0.45 kg of water. Container and water are initially at 20"C. A 1 kg block of metal is heated to 100"C and placed in the water in the container. The final temperature of the system is 40.C. Find the specific heat capacity of the metal. The specific heat capacity of the water is 4200 J kg" "C" and that of copper is 390 J kg C-1. [5]