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Lon Capa 13 - Chem 102 Questions And Answers With Verified Solutions 100% Correct Latest Updated 2025
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Lon Capa 13 - Chem 102 Questions And Answers With Verified Solutions 100% Correct Latest Updated 2025

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  • January 9, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Lon Capa 13 - Chem 102 Questions And
Answers With Verified Solutions 100%
Correct Latest Updated 2025
mass - ANSWER✔✔ extensive


enthalpy - ANSWER✔✔ extensive


temperature - ANSWER✔✔ intensive


boiling point - ANSWER✔✔ intensive


heat - ANSWER✔✔ extensive


What is the change in internal energy if the heat given off by the system is 109 J
and the work being done by the system is 208 J? - ANSWER✔✔ ∆E = -317 J


A cylinder with a moveable piston contains 92g of Nitrogen. The external pressure
is constant at 1.00 atm. The initial temperature is 200K. When the temperature is
increased by 77 K, by taking it out of the freezer, the volume will increase,
according to the Ideal Gas Law. Calculate the work for this process.


The conversion factor between liter atmospheres and joules is 101.3 J = 1 L atm.
The gas constant is 0.08206 (L atm)/(mol K). Molecular weight of Nitrogen is 28
g/mol - ANSWER✔✔ w = -2103

, Calculate the work (w) and ΔE°, in kJ, at 298 K and 1 atm pressure, for the
combustion of one mole of C₃H₈ (g). First write and balance the equation. The
products will be CO₂ (g) and H₂O (g). The value of ΔH° for this reaction is -2043.9
kJ/mol.
a) The value for w in kJ =

b) The value for ΔE° ( in kJ) = - ANSWER✔✔ a) w = -2.477 kJ
b) ∆E° = -2046.378 kJ


A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at
1 atm. The temperature of the system is lowered by 97 K. Calculate the heat lost
or gained by the system. Heat capacity for Helium = 20.8 J/(mol K) Molecular
weight for Helium = 4 g/mol - ANSWER✔✔ q = -126100 J


Calculate the final temperature of the water from the following heat transfer
experiment. 48 g of water at an initial temperature of 61 °C (Celsius) is added to
100.0 g of water at 100.0 °C. The experiment is performed in an insulated
container to prevent heat loss to the surroundings.


Specific heat of water = 4.184 J/(g ∙°C) - ANSWER✔✔ Tf= 8.74 x 10¹ C


A 100.0g sample of nickel is heated to 100.0 °C (Celsius) and is placed in a coffee
cup calorimeter containing 150. g of water at 25.0 °C. After the metal cools, the
final temperature of the metal and the water is 29.8 °C. Calculate the specific heat
capacity of nickel from these experimental data, assuming that no heat escapes to
the surroundings or is transferred to the calorimeter.


∙ Specific heat of water = 4.184 J/g °C
∙ atomic mass Ni = 58.7 g/mol

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