A sample of an alloy weighing 65.00 g with a temperature of 90.00°C is dropped into 120.0 g of water at 25.00°C. The final temperature of both the alloy and the water is 40.00°C. Calculate the specific heat capacity of the alloy if the specific heat of water is 4.184 J/(g•°C).

A 100g piece of copper at 90°C is placed in 250g of water at 20°C. Assuming no heat is lost to the surroundings and the specific heat of copper is 0.385 J/g°C, calculate the final temperature of the system.

What is the definition of thermal equilibrium?

What principle explains why the heat lost by one substance equals the heat gained by another in a closed system?

What does each symbol represent in the formula q = mcΔT?