G
Gogators713
Guest
1. If the heat gained by the system is 35 J, and the work done by the system is 46 J what is the net change in the internal energy?
2. why does a bomb calorimeter measure changes in internal energy instead of changes in enthalpy?
3. if same amount of heat is added to 1 g samples of gold, iron, aluminum, and (liquid) water, which sample will increase in temperature the most? (look at chart)
4. How much heat is needed to increase the temperature of 0.1000 g of mercury from 14.2 degrees Celsius to 17.4 degrees Celsius (see chart)
5. Using deminsional analysis, determine the molor heat capacity
(J/mol *K) of gold and water. (see chart)
Chart
C_s (J/g*K)
Au(s) 0.129
Hg(l) 0.140
Cu (s) 0.385
Fe (s) 0.449
K(s) 0.753
Al (s) 0.897
N_2(g) 1.04
H_2_O (g) 1.84
H_2_O (s) 2.09
CH_4 (g) 2.20
C_2_H_5_OH (l)
H_2_O (l) 4.184
2. why does a bomb calorimeter measure changes in internal energy instead of changes in enthalpy?
3. if same amount of heat is added to 1 g samples of gold, iron, aluminum, and (liquid) water, which sample will increase in temperature the most? (look at chart)
4. How much heat is needed to increase the temperature of 0.1000 g of mercury from 14.2 degrees Celsius to 17.4 degrees Celsius (see chart)
5. Using deminsional analysis, determine the molor heat capacity
(J/mol *K) of gold and water. (see chart)
Chart
C_s (J/g*K)
Au(s) 0.129
Hg(l) 0.140
Cu (s) 0.385
Fe (s) 0.449
K(s) 0.753
Al (s) 0.897
N_2(g) 1.04
H_2_O (g) 1.84
H_2_O (s) 2.09
CH_4 (g) 2.20
C_2_H_5_OH (l)
H_2_O (l) 4.184