Direction: Write F if the statement is correct and B if it is incorrect. ________1. According to the first law of thermodynamics, energy can be created and destroyed. ________2. The energy of the surroundings is called as internal energy. ________3. Internal energy of the system is composed of two state functions called heat and work.
Direction: Write F if the statement is correct and B if it is incorrect. ________1. According to the first law of thermodynamics, energy can be created and destroyed. ________2. The energy of the surroundings is called as internal energy. ________3. Internal energy of the system is composed of two state functions called heat and work.
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.94PAE
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Question
Direction: Write F if the statement is correct and B if it is incorrect.
________1. According to the first law of thermodynamics , energy can be created and
destroyed.
________2. The energy of the surroundings is called as internal energy.
________3. Internal energy of the system is composed of two state functions called
heat and work.
________4. When both q and w are both positive, the internal energy of the system
increases.
________5. The work done by the system is categorized by a negative (-) sign on the
value of work (w).
________6. Enthalpy is symbolized by the letter H which refers to the energy
transferred under constant temperature.
________7. At constant pressure, change in enthalpy is always equal to heat (q).
________8. An exothermic reaction feels cold to the touch because heat is absorbed by the system.
________9. When the heat energy of product is greater than its reactant, it is
categorized by an endothermic reaction.
________10. Thermochemical equation shows the enthalpy relationships between reactants and products.
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