Mike Piro-Enthalpy and Specific Heat Lab Chem1030.docx -...

This preview shows page 1 - 4 out of 7 pages.

PRE - LAB Q UESTIONS 1.When 3.0 kg of water is warmed from 10 °C to 80 °C, how much heat energy is needed? 2.A calorimeter contains 100 g of water at 39.8 ºC. A 8.23 g object at 50 ºC is placed insidethe calorimeter. When equilibrium has been reached, the new temperature of the water and metal object is 40 ºC. What type of metal is the object made from? 3. Enthalpy and Specific Heat
EXPERIMENT 1: DETERMINATION OF SPECIFIC HEAT OF A METAL Data Sheet Table 2: Mass Mass (g) Water 49.9 g Unknown Metal Strip 21.7 g Table 3: Specific Heat Data Time (minutes) Temperature (°C) Trial 1 Trial 2 Trial 3 Initial 24 23 22 5 minutes 25 25 23 6 minutes 25 25 23 7 minutes 25 25 23 8 minutes 25 25 23 9 minutes 25 25 23 10 minutes 25 25 23 Average Specific Heat Capacity of the Unknown Metal: 0.169J/gC Post-Lab Questions 1. Why is ΔTmetal < 0? Enthalpy and Specific Heat

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture