Calorimeters

[Carolina Gura Dis 1B]

Hi, I'm a bit confused on how calorimeters work, as well as how can a system be completely isolated. Also when would isolated systems be required, like can they be found in a natural stater or are they artificially made by people?

[Catherine Lirtsman 2G]

The two calorimeters we looked at analyzed two different variables. They are not found naturally, but instead are tools that are used to calculate enthalpy.
The constant pressure calorimeter was an isolated system because the volume and moles are kept constant. The coffee cup that the substance is in helps keep it at the same volume and moles because it is closed up. Then the volume and heat are found.
The constant volume calorimeter keeps the moles constant like before, but the pressure changes instead of the volume. The volume is held very constant by a tight, strong container.

[Rochelle Mosley 2D]

In addition to what was said above an isolated system is a system where nothing can make it change in regards to the surroundings or the system. So it has to be sealed and isolated in order to be a true isolated system.

[Levon_Avedian_2H]

What is the significance of calorimeters?

[Levon_Avedian_2H]

What is the significance of calorimeters?