how do I solve these?

MOODY Topic: PHYSICS HEAT TRANSFER PROBLEMS ROOM 118 HEAT LOST = HEAT GAINED Q = meAT, where Q - heat energy(J), m = mass (kg), c = specific heat (Jkg K-1), and AT = change in temp(K) AT - (Inmal - Timidat). In a closed system containing two objects A and B, if heat transfer occurs from A to B, heat lost by A = QA and heat gained by B = Os, will be equal. QA = QB MACAATA - MBCBATH Solve the following problems. Show every step and remember to follow sig. fig. rules while rounding off your answer. Show the final answer in a box with proper unit 1) A 0.25-kg piece of iron (c =450 J/kgK) is placed into a hot water and reaches a temperature of 94"C. The iron is then removed and placed into a beaker containing 0.45 kg of water at 22"C. Calculate the final temperature of the water in the beaker. 2) An 0.025 kg block of copper (c- 390 J/kg/K) at 95"C is dropped into a calorimeter containing 0.075 kg of water at 25"C. What is the final temperature