1.) In the Mythbuster\'s burning thermite video 1000 lb of thermite were used. T
ID: 996916 • Letter: 1
Question
1.) In the Mythbuster's burning thermite video 1000 lb of thermite were used. That's 454 kg. A mole of thermite (1 Fe2O3 + 2 Al) weighs 213.7 g. The thermite reaction produces 280 kJ/mole Al. How much energy in GJ was produced in total.
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2.) If it 2 GJ of energy are released in the combustion of a tank of gasoline (15 gallon), how does the energy produced in the 1000 lb thermite reaction compare?
a. the energy produced by 1000 lb of thermite is a lot less than that produced by a tank of gas.
b. the energy produced by 1000 lb of thermite is about the same as that produced by a tank of gas.
c. the energy produced by 1000 lb of thermite is a lot more than that produced by a tank of gas.
Explanation / Answer
1 mole of thermite has 2:1 ratio of AL,Fe2O3
2131.45 moles of thermite has been consumed
A mole of thermite (1 Fe2O3 + 2 Al) weighs 213.7 g. The thermite reaction produces 280 kJ/mole Al
2134.45 moles thermite produce 2134.45*289Kj = 6.15 X 10^8 J
= 0.6159Gj
2)the energy produced by 1000 lb of thermite is a lot less than that produced by a tank of gas.
because 0.6159Gj is produced in 1000lb thermite
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