Enthalpy_Specific_Heat.docx - Enthalpy and Specific Heat PRE-LAB QUESTIONS 1 When 3.0 kg of water is warmed from 10 \u00b0C to 80 \u00b0C how much heat energy

# Enthalpy_Specific_Heat.docx - Enthalpy and Specific Heat...

• 6
• 100% (25) 25 out of 25 people found this document helpful

This preview shows page 1 - 4 out of 6 pages.

Enthalpy and Specific Heat PRE-LAB QUESTIONS 1When 3.0 kg of water is warmed from 10 °C to 80 °C, how much heat energy is needed? 2A 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?
Enthalpy and Specific Heat EXPERIMENT 1: DETERMINATION OF SPECIFIC HEAT OF A METAL Data Sheet Table 2: Mass Mass (g) Water 50 Unknown Metal Strip 36.1 Table 3: Specific Heat Data Time (minutes) Temperature (°C) Trial 1 Trial 2 Trial 3 Initial 63.4 68.4 75.8 5 minutes 66.6 73.1 78.1 6 minutes 66.9 73.3 78.3 7 minutes 67.2 73.4 78.4 8 minutes 67.4 73.4 78.4 9 minutes 67.7 73.5 78.4 10 minutes 68.0 73.6 78.4 Average Specific Heat Capacity of the Unknown Metal: 0.1455 Post-Lab Questions
Enthalpy and Specific Heat 1 Why is ΔT metal < 0? Because the temperature in the metal is greater than the temperature of the water 3 Why is ΔT water > 0 ? The water starts out at a lower temperature than the metal. The temperature wants to stabilize at a temperature between them.