A piece of silver weighing 120 g, when cooled from 66 to 16 ° C, releases 1.5 kJ of heat into the environment. What is the specific heat of silver?
Data: m (mass of a piece of silver) = 120 g (0.12 kg); t1 (temperature of a piece of silver before cooling) = 66 ºС; t2 (final cooling temperature) = 16 ºС; Q (the amount of heat that a piece of silver gave off) = 1.5 kJ (1500 J).
The specific heat capacity of silver is determined by the formula for calculating the amount of heat: Q = C * m * (t1 – t2); С = Q / (m * (t1 – t2)).
Calculation: С = 1500 / (0.12 * (66 – 16)) = 250 J / (kg * ºС).
Answer: According to the calculation, the specific heat of silver is 250 J / (kg * ºС).
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.