Energy In Thermal System 3384v

ENERGY IN THERMAL SYSTEM OBJECTIVE 1. To gain thermal equilibrium. 2. To determine final temperature. INFERENCE Thermal equilibrium is achieved when two substance reach the same temperature and exchange to heat energy. HYPOTHESIS The final temperature obtained from experiment will be the state in which the temperature of two substance reached the equal temperature at a certain time. APPARATUS 1. Calorimeter 2. Mercury thermometer 3. Beaker 4. Bunsen burner 5. Balance 6. Hot hand protector 7. Tripod stand and wire gauze 8. Lighter gun

1 1 2 1 1 1 1 1

PROCEDURE 1. Weight the mass of an empty beaker and record as . 2. Fill 200ml tap water into the beaker. Measure mass of the beaker with tap water and record as . 3. Read the initial temperature of tap water and record as . 4. Fill another empty beaker with 250ml water. Weight the mass of the beaker and record as . 5. Heat the beaker for 10 minutes. 6. Read the temperature of the hot water and record as as Figure 1. 7. Pour slowly cold water into the beaker containing hot water. 8. Using thermometer, stir slowly the mixture about 10 seconds. Record the final temperature as .

Figure 1

RESULT Table 1 Mass Empty beaker, Beaker with 200ml tap water, Beaker with 250ml hot water, Mass of tap water = = Mass of hot water = = Mass of water mixture =

Table 2 m (gram) 202.3

Temperature

388.7 424

Tap water,

28

Hot water,

60

The mixture,

45 186.4 g 221.7 g 408.1 g

+

CALCULATION Calculate

by using following equation:(

) (

(from experiment) (from calculation) % Error

(

) ) 45 44.8 0.4%

QUESTION 1. Does the final temperature in this experiment is equal with the final temperature in calculation? - No.

2. If both of the final temperatures are not same, explain why and relate to thermal equilibrium principle? -

CONCLUSION