A 50.0 g sample of zinc is heated, then placed in a calorimeter containing 100.0 g of water. The temperature of the water increases from 22.00°C to 24.50°C. The specific heat of zinc is 0.390 J/(g°C). What was the initial temperature of the zinc metal sample? (Final temperatures of zinc and water are the same and no heat escapes from the calorimeter).