Purpose: To measure the specialised warmness capacities of aluminum, steel and brass.
Theory: The amount of heat that is infallible to transmit the temperature of an object glass is proportional to the luck of the object the the temperature change of the object:
Q=cmT
Where Q=amount of heat
c=specific heat capacity of the material
m= voltaic pile of the object
T= temperature change of the object
Calorie is the unit of standard of heat and is defined as the amount of heat required to raise the temperature of one gram of piss from 14.5 °C to 15.5 °C. Then, the water has a specific heat of 1 cal/g°C. So:
Cw=Q/mT=1cal/(1g)(1°C)
The specific heat can be run aground by measuring the temperature change of a given mass of material produced by a quantity of heat. This is done by a procedure known as the mode of mixture. This method involves an object with a mass (m) that is het up by an initial temperature (T1) and then placed in water. Water has a mass of (Mw) and a temperature of (Tw). The mixture will come to an equilibrium which leaves us with a final temperature of (T2). So:
mc(T1-T2)=MwCw(T2-Tw)
Cw and c are the specific heats of the the water and material.
Procedure: We had three different admixtures (aluminum, steel and brass) for this lab.
We counterbalance boiled speed of light0g of water in a beaker on the gamy plate and then submerged the metal object into the heated water. After allowing time for the metal to absorb the heat we upstage the object and placed it in 100g of room temperature water in plastic cup. After shaking the cup gently to control that the mixture reached the equilibrium temperature quickly, we measured the final temperature to get the T2 value. We repeat these steps three times for each individual metal object.
Results:
Data Set 1
aluminumm(g)T1 (°C)Mw (g)Tw(°C) T2(°C)c(cal/g°C)
126.510010023.027.207
226.5.179
326.1.158
steelm(g)T1 (°C)Mw (g)Tw(°C) T2(°C)c(cal/g°C)...If you want to get a full essay, order it on our website: Ordercustompaper.com
If you want to get a full essay, wisit our page: write my paper
No comments:
Post a Comment