Question

Table 1.2 Trial 1 Trail 2 Trail 3 14.5 AT 10℃ 니 Q135 415133.8 098.15 -1224.15 Questions 1. For each trial calculate the % difference between the absolute values of Qc and QH. Show work in the space provided. (5 p9ints1sure d'measured 100 ー-measured+ x 100 : 22.aos16 _ x IOO.123.7% -122./.os75_ 치00123.7 % dice- x100 ial 2 12.lo x100-11012:15 x 00-10.8 018.75-1224.15 % diff Was energy, more or less, conserved in this experiment? If it wasn't perfectly conserved what are two are reasonable sources for the non-conservation of energy in this experiment? (5 points) 2. should have a negative value, and Qc should have a positive value, what are the physical meanings of the positive and negative signs? (10 points) 3·

2. Was energy, more or less conserved in this experiment? If it wasn't perfectly conserved what are two reasonable sources for the non-conservation of energy in this experiment?

3. QH should have a negative value, and Qc should have a positive value. What are the physical meanings of the positive and negative signs?

Answer 1

2) energy iwas more conserved in this experiment. we can get this desicion from part 1.diffrent between absolute value of Q_{c and} Q_H.value is decreased in trail 1 2 and 3.

temperature : when temperature is varied energy also varied.

mass

3) possitive sign :when heat is transferred into the working substance.

negative sign :when heat leaves the working substance