Question

The heat required to sustain animals to hibernate, comes from the biochemical oxidation of fatty acids:
Arachidonic acid + 2() → 2() + 2 ()
Its standard molar enthalpy of formation is −636 −1
() + 2() → 2() ∆⊝ = −393.5 /
22() + 2() → 22() ∆⊝ = −571.6/
Calculate the mass of arachidonic acid (the fatty acid mentioned) needed to warm a 500 bear from 5°C to 25°C. Assume that the average heat capacity of bear flesh is 4.18 −1−1

Answer 1

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Answer 2

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