Chemistry, 07.05.2020 05:12 marlesly87
The fuel value of hamburger is approximately 3.3 kcal/g. If a man eats 0.75 pounds of hamburger for lunch and none of the energy is stored in his body, estimate the amount of water that would have to be lost in perspiration to keep his body temperature constant. The heat of vaporization of water may be taken as 2.41 kJ/g.
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![Q = m[c(t_2 -t_1) \ + \ Lv]\\\\m = \frac{Q}{c(t_2 -t_1) \ + \ Lv} \\\\m = \frac{4,703.6 \times 10^3 }{4.186 (100-37) \ + \ 2.41 \times 10^3} \\\\m = 1,759.2 \ g\\\\m = 1.76 \ kg](/tpl/images/0651/6942/32919.png)
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The fuel value of hamburger is approximately 3.3 kcal/g. If a man eats 0.75 pounds of hamburger for...
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