I-Purpose
The purpose of this lab was to find the specific of the unidentified metal we were issued.The unknown will be Aluminum, Brass, Copper, Lead, Stainless steal, or Zinc. We need to collect the temperature of our samples and the temperature of the water before and after heating.
II- Background
What we needed to learn was the formula for specific heat formula. The specific heat is the amount of one unit of mass required to raise the temperature of the sample by one degree Celsius. The formula is shown as following.
Q=CMΔT
Water plays an important part in finding the specific heat of the metal because Waters specific heat is different than any of the other metals.
The specific Heats of the given metals:
Lead= 0.129
Stainless Steal= 0.490
Zinc= 0.390
Water = 4.148
Aluminum= 0.897
Brass & Copper= 0.305
III- Tests:
Test1:
- Weight of cup(g): 3.044g
- Weight of cup and water (g): 100.46g
- Weight of metal(g): 26.422g
- Temperature of water: 22.7C
- Temperature of metal: 99.6C
- Temperature of water + metal: 24.9C
Test2:
- Weight of cup: 3.02g
- Weight of cup + water: 101.59g
- Weight of metal: 26.422g
- Temperature of water: 24.6C
- Temperature of metal: 99.9C
- Temperature of water + metal: 27.8C
III- Conclusion
From my test results I have concluded that I have Stainless Steel. The first test result yielded a very precise number, and although it was a bit farther away from .49, the second test confirmed my original test.
WE HAD SAMPLE NUMBER 3
