Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 20, Problem 20PS
Interpretation Introduction

Interpretation:

It should be determined that the energy in kilo joules used to power a 100watt light bulb continuously over an 24 hour period and the quantity of coal would have to be burned to provide this quantity of energy.

Concept introduction:

  • Enthalpy of combustion is the energy released by a combustion reaction between hydrocarbons, oxygen and heat source.
  • Enthalpy of formation is the heat released or absorbed in a chemical reaction at constant temperature when simple substances combine into a more complex substance.
  • 1watt=1J/s1kwh=3600kJ
  • 1kWh is the quantity of energy transferred when 1000watt is dispensed over a 1.0hourperiod

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Chemistry & Chemical Reactivity

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