Table of Contents
How do you find J in specific heat?
Multiply the change in temperature by the specific heat capacity and the mass of your object. This will give you the heat lost or gained in joules. Example: If 10 kilograms of water are heated from 10 degrees Celsius to 50 degrees Celsius, how much energy (in joules) did they absorb?
What is the specific heat of an unknown metal?
approximately 916 J kg−1
The specific heat capacity of the unknown metal is approximately 916 J kg−1K−1, which roughly corresponds to the heat capacity of aluminium as listed in the Handbook of Chemistry and Physics.
Can you use specific heat to identify an unknown metal?
Both specific heat and density are physical properties that can be used to identify an unknown element.
What is the joules formula?
In equation form: work (joules) = force (newtons) x distance (meters), where a joule is the unit of work, as defined in the following paragraph.
What is J in thermodynamics?
J is the Joule’s constant. U is the internal energy of the system. For any process, the heat supplied to the system is either used to give some work output or is used to increase the internal energy of the system.
What is the specific heat of the unknown metal sample?
What is the specific heat of the unknown metal sample? An irregular lump of an unknown metal has a measured density of 2.97 g/mL. The metal is heated to a temperature of 173 °C and placed in a graduated cylinder filled with 25.0 mL of water at 25.0 °C.
What is the temperature of a piece of metal X?
1. The temperature of a piece of Metal X with a mass of 95.4g increases from 25.0°C to 48.0°C as the metal absorbs 849 J of heat. What is the specific heat of Metal X?
How do you find the specific heat capacity of a metal?
Rearrange the formula Q = mcΔT to find c of the metal. where m is metal and w is water. where C is the constant-pressure specific heat capacity in J/g∘C, mi the mass, and ΔT the change in temperature in ∘C.
What is the specific heat of copper in joules?
Exothermic 5. Copper has a specific heat of 0.385 J/(g×°C). A piece of copper absorbs 5000 J of energy and undergoes a temperature change from 100 °C to 200 °C.