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An Open-Book 10-Minute Test of Lab 8 of 40B and Lab 5 of 2LB
Specific Heat of Metals
You can only talk to your PARTNER(S) or the Teaching Assistant. If you have the leisure to show off your superior intellect, then I must follow the supervisor's instructions strictly: ask you all to do every thing required by the LAB MANUAL.
The NAME of EXAMINEE:
The NAME of EXAMINEE's partner:
The EXAMINEE's workstation:
Courtesy of Elaine DeGuzman
MN2 = 8.1, Unit:( g ),
Latent Heat of N2 = 45.2, Unit:( Cal / g ),
D T =(Troom-TN2) = 221.15, Unit:( K )
TN2=77.00, Unit:( K )
Mmetal = 44.82, Unit:( g ),
Cv ´ Atomic Weight = Molar Cv
The theoretical value of Molar Spectific Heat of metal, 3R = 5.96.
Record your final result in the following table:
|
Metal |
c v= cmetal , (cal/g-K) |
Atomic weight (g/mole) |
Experimental Molar Cv |
%ERROR |
|
Lead |
c Lead = |
207.19 |
7.65 | % |
Question:
(0.5 POINT) What is the value of room temperature, Troom = 25.00 (oC) in Kelvins? You must take significant figures into consideration.
ANSWER:
(0.5 POINT) What is the value of the experimental Specific Heat of Lead, C lead ? You must take significant figures into consideration.
ANSWER:
(0.5 POINT) What is the percent error of the Molar Specific Heat of lead, Molar C v ? You must take significant figures into consideration.
ANSWER:
(0.5 POINT) What is the unit of the Molar Specific Heat of metal, Molar C v ?
ANSWER:
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