True or False A manufacturing company requires 157 kJ of energy to power one of its...
True or False
A manufacturing company requires 157 kJ of energy to power one
of its machines for a day. The reaction shown below would be able
to provide a sufficient amount of energy for this purpose.
2 HgO(s) → 2 Hg(l) + O2(g) ΔH
= 182 kJ
Homework Answers
ΔH for the reaction is positive.
So, the reaction shown will not give any energy instead it requires energy.
So, it will not be able to power the machines
Answer: False
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True or False
A manufacturing company requires 157 kJ of energy to power one
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Please help with these two questions :(
1. How much energy (in kJ) is evolved during the reaction of
76.9 g of Al, according to the reaction below?
Fe2O3(s) + 2 Al(s) →
Al2O3(s) + 2 Fe(s) ΔH°rxn = -852
kJ
Assume that there is excess Fe2O3.
2. A 12.43 g sample of ethanol (C2H5OH) is
burned in a bomb calorimeter with a heat capacity, C = 5.65
kJ/°C.
C2H5OH(l) + 3 O2(g) → 2
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True or False
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