How much energy is required to heat up 19g of copper from 12 °C to 36 °C. The specific heat capacity is 322 J/g °C.

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?