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2. The standard value of $L_f$ for water is 79.6 cal/g. What is the percent error of your measurement? A major error in the determination of $L_f$ arises because the ice is not \"dry ice\", i.e. water adheres to the ice making $M_i$ more than the true ice mass. Explain how this makes the calculated $L_f$ value too large or too small. 3. Referring to Data Table 3, analysis the major sources of error. How could you improve the result? Give your suggestions. 4. Specific heat of Al is twice of that Fe. (a) If Al and Fe have same mass and the same amount of heat is added to Al and Fe individually, discuss what will happen. (b) If the same amount of heat is individually added to Al and Fe results in the same temperatures increase, discuss how this can be done. 5. A 60 gram iron at 60 $^\circ$C is dropped into 200 gram of water at 20 $^\circ$C. What is the final equilibrium temperature of the system? (Ignore the heat loss to the surroundings.)

          2. The standard value of $L_f$ for water is 79.6 cal/g. What is the percent error of your
measurement? A major error in the determination of $L_f$ arises because the ice is
not \"dry ice\", i.e. water adheres to the ice making $M_i$ more than the true ice mass.
Explain how this makes the calculated $L_f$ value too large or too small.
3. Referring to Data Table 3, analysis the major sources of error. How could you
improve the result? Give your suggestions.
4. Specific heat of Al is twice of that Fe.
(a) If Al and Fe have same mass and the same amount of heat is added to Al and
Fe individually, discuss what will happen.
(b) If the same amount of heat is individually added to Al and Fe results in the
same temperatures increase, discuss how this can be done.
5. A 60 gram iron at 60 $^\circ$C is dropped into 200 gram of water at 20 $^\circ$C. What is the
final equilibrium temperature of the system? (Ignore the heat loss to the
surroundings.)

2. The standard value of Lf for water is 79.6 cal/g. What is the percent error of your
measurement? A major error in the determination of Lf arises because the ice is
not d̈ry ice,̈ i.e. water adheres to the ice making Mi more than the true ice mass.
Explain how this makes the calculated Lf value too large or too small.
3. Referring to Data Table 3, analysis the major sources of error. How could you
improve the result? Give your suggestions.
4. Specific heat of Al is twice of that Fe.
(a) If Al and Fe have same mass and the same amount of heat is added to Al and
Fe individually, discuss what will happen.
(b) If the same amount of heat is individually added to Al and Fe results in the
same temperatures increase, discuss how this can be done.
5. A 60 gram iron at 60 ^∘C is dropped into 200 gram of water at 20 ^∘C. What is the
final equilibrium temperature of the system? (Ignore the heat loss to the
surroundings.)

Added by Nicole P.

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