(a)
Interpretation:
Volume of tank car has to be estimated. The mass of propane in the tank car has to be calculated. Also the energy transferred at burning of propane has to be identified.
(a)
Answer to Problem 122QRT
Volume of tank car is
The mass of propane in the 5 tank cars are
The energy transferred at burning of propane is
Explanation of Solution
The dimensions of tank car are 20 feet
The liquid propane density at its boiling point is found to be
The balanced chemical equation for combustion of propane is
Now, the reaction enthalpy for above reaction is shown as below,
Finally the energy evolved by the mass of propane present in 5 tank cars is calculated as follows,
(b)
Interpretation:
The metric kilotons of
(b)
Answer to Problem 122QRT
The amount of
Explanation of Solution
First, the molar mass of
Now the energy evolved by the propane mass in 5 tank cars is converted into moles which then using metric mass relationships the metric kilotons of
(c)
Interpretation:
The energy transferred from Hiroshima and Nagasaki nuclear fission bombs has to be determined. Also up to date the largest nuclear weapon detonated has to be identified and whether evacuating the town serves as good idea or not has to be indicated.
(c)
Answer to Problem 122QRT
The energy of Hiroshima bomb transferred is
The energy of Nagasaki bomb transferred is
The conclusion obtained from this is to evacuate the town serves as the good idea.
Explanation of Solution
The bomb dropped at Hiroshima is
So far the biggest hydrogen bomb ever tested was the Tsar Bomb. It was tested over the Mityushikha Bay nuclear testing range north of Arctic Circle over the Nocaya Zemlya archipelago in Arctic Sea. About
Using percentages the energy released from propane in tank cars are compared with the above bomb as follows,
Therefore, evacuating the town was the good idea.
(d)
Interpretation:
The energy released by propane combustion has to be compared with the hurricane energy.
(d)
Explanation of Solution
The energy released from the hurricane is found to be around
The energy evolved by the mass of propane present in 5 tank cars is calculated as
Therefore,
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Chapter 4 Solutions
EBK CHEMISTRY: THE MOLECULAR SCIENCE
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