Brandon Upton L09_Enthalpy_Specific_Heat.docx - Lab 9:...

This preview shows page 1 - 3 out of 5 pages.

Lab 9: Enthalpy and Specific HeatIn today’s lab, I will be learning how to determine and compare the specific heat of an unknownmetal while recording my data throughout the lab. Upon completion of the experiment, I will beable to determine the unknown metal. During this experiment I will also be testing theendothermic and exothermic processes between an ice pack and heat warmers.Pre – Lab Questions:1.When 3.0 kg of water is warmed from 10 °C to 80 °C, how much heat energy isneeded?
2.A calorimeter contains 100 g of water at 39.8 ºC. A 8.23 g object at 50 ºC is placedinside the calorimeter. When equilibrium has been reached, the new temperature ofthe water and metal object is 40 ºC. What type of metal is the object made from?4.86JgK * 100g * (40oC – 39.8oc)83.72 J8.23g*(50c – 40c)823cJ83.72J /823L0.10173JgKLeadExperiment 1:Determination of Specific Heat of a MetalTable 2: MassMass (g)Water50.0gUnknown Metal StripTable 3: Specific Heat Data
Time (minutes)Temperature (°C)Trial 1Trial 2Trial 3Initial21.7°C21.6°C21.6°C5 Minutes23.5°C23.3°C23.9°C6 Minutes23.7°C23.6°C24.6°C7 Minutes23.8°C23.8°C24.8°C8 Minutes23.8°C23.8°C24.8°C9 Minutes23.8°C23.8°C24.9°C10 Minutes23.8°C23.8°C24.9°C

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 5 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
Khurana
Tags
Thermodynamics, Energy, Heat, 0 7 C, 0 6 C, 8 23g

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture