Question 22
2 pts
Consider the below unbalanced chemical equation. What mass of iron can be produced from 50.0 g
of iron oxide and 50.0 g of carbon monoxide?
Fe2O3 + CO → Fe + CO2
Question 23
2 pts
The combustion of butane releases 2877 kJ/mol of heat energy. What mass of butane is needed to
generate 20 kJ of energy? Please report your answer in milligrams.
Question 24
2 pts
Consider a particular reaction that has an activation energy of 500 kJ and an enthalpy of reaction of
+150 kJ. When a catalyst is added to the reaction, the new activation energy is measured to be 400
kJ.
What is the enthalpy of reaction for the catalyzed reaction? Please answer in kJ.
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