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?.11 . 3:11 PM A circus performer hauls his 108 lb partner to the top of the trapeze (25 m) How much energy does the performer expend? kj How many grams of glucose must the performer consume to acquire this energy, assuming conversion of glucose to muscle energy is 30% efficient? ar 2.8 Iron is produced by roasting - heating iron oxide, Fe203, with elemental carbon produced by heating wood in an oxygen-poor atmosphere. Calculate the enthalpy for production of iron. Fe2O3(s) + 3 C(graphite) 2 Fe(s) +3 CO(g) 492.7 kj Use enthalpy of formation data to determine the latent heat of vaporization for propane, C3Ha
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