The energy content of a Big Mac is 540 Cal.How much water can be heated from 25°C to 95°C by this amount of energy? [d(water)= 1.00 g/mL,c_p (water)= 4.18 J/(g.°C),1 Cal = 4.184 kJ]

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Quizplus · Accepted Answer

The energy in a Big Mac is 540 Cal, which is equivalent to 540 x 4.184 kJ = 2260.56 kJ. To find the mass of water that can be heated, use the formula q = mcΔT. Rearranging gives m = q / (cΔT). Here, q = 2260.56 kJ = 2260560 J, c = 4.18 J/g°C, and ΔT = 95°C - 25°C = 70°C. Solving gives m = 2260560 J / (4.18 J/g°C * 70°C) = 7700 g, which is equivalent to 7.7 L of water.

The Energy Content of a Big Mac Is 540 Cal