A chemist carefully measures the amount of heat needed to raise the temperature of a 199.0 g sample of a pure substance from 22.3°C to 32.8°C. The experiment shows that 3.87 kJ of heat are needed. What can the chemist report for the specific heat capacity of the substance?
Round your answer to 3 significant digits.
A 37.0g sample of polyisoprene, which has a specific heat capacity of 1.880 J·g−1°C−1, is dropped into an insulated container containing 150.0g of water at 55.0°C and a constant pressure of 1 atm. The initial temperature of the polyisoprene is 5.2°C.
Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water.
Be sure your answer has 3 significant digits.
