1. A sample of water changes temperature from 80.0 °C to 20.0 °C. Calculate T. 2. How much energy is required to raise 57.1 grams of water from a temperature of 36.5 °C to 66.9 °C? 2. What mass of magnesium is present if 250 J raises the temperature from 25 °C to 27 °C? (Use the chart). 3. What is the heat capacity of an unknown metal if 65.5 grams absorbs 1550 J and undergoes a temperature change of 62.0 Cº? 4. A beaker contains 125.0 grams of water at 22.0 °C. A small piece of metal with a mass of 38.2 grams is in another beaker of boiling water, measured at 102 °C. When the metal is removed and added to the cooler water, the final temperature is 23.3 °C. What is the specific heat of the metal? What is the metal?
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
Answer all
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 6 images
