
Concept explainers
Interpretation: To determine the how many number of years keep burning the bulb by mass defect energy of 1mole
Concept introduction: Mass defect:
The nucleus of each atom (aside from
Mass and energy are related by following equation.
E= Energy
m= mass
c =
Loss of mass and liberation of energy are related by Einstein’s equations.

Answer to Problem 14.43PAE
Solution:
The mass defect energy keeps the burning up to 3221years.
Explanation of Solution
Formula used:
Calculation: Let’s calculate the calculated mass of
The calculated mass of
Let’s calculate the mass defect
Mass defect of
Let’s find the binding energy
Let’s calculate the energy release when
Energy released by 1 mole of
If it takes 360kJ of energy to keeps a 100-watt light bulb burning for 1 hour.
Assuming light bulb won’t burn out.
Let’s calculate the how many years this energy of carbon -14 could keep bulb burning.
From the given, 360 kJ will burn for 1 hour.
Let’s converts hours into days.
Therefore, the mass defect energy keeps the burning up to 3221 years.
Therefore, the mass defect energy keeps the burning up to 3221 years.
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Chapter 14 Solutions
Chemistry for Engineering Students
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