Question: How much heat will be stored in a 1 0 0 ft 2 concrete wall, with 1 ft . thickness, if it is warmed from

How much heat will be stored in a 100 ft2 concrete wall, with 1 ft. thickness, if it is warmed from 65\deg F to 85\deg F by exposure to sunlight?
(Tip: Use the equation Q = M x C x TD; Convert the volume of concrete to mass before using the formula)
44.9 MMBTU
144 MMBTU
44.9 MBTU
144 MBTU

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