A 56-kg hiker is climbing the 828-m-tall Burj Khalifa in Dubai. If the efficiency of converting the energy content of the bars into the work of climbing is 25%, the remaining 75% of the energy released through metabolism is heat released to her body. She eats two energy bars, one of which produces 1.10×103kJ of energy upon metabolizing. Assume that the heat capacity of her body is equal to that for water (75.3 Jmol−1⋅K−1). Calculate the increase in her temperature at the top of the structure.

The given question is incomplete. The complete question is as follows.

A 56-kg hiker is climbing the 828-m-tall Burj Khalifa in Dubai. If the efficiency of converting the energy content of the bars into the work of climbing is 25%, the remaining 75% of the energy released through metabolism is heat released to her body. She eats two energy bars, one of which produces 1.10×103kJ of energy upon metabolizing. Assume that the heat capacity of her body is equal to that for water (75.3 Jmol−1⋅K−1). Calculate the increase in her temperature at the top of the structure.

Calculate the temperature at the top of the structure. Assume her intitial temperature to be .

Explanation:

Energy present in total of two bars is as follows.

          kJ

            (as 1 kJ = 1000 J)

As 75% of energy releases out. Let us assume that energy releases out of its body be E. Then, energy will be calculated as follows.

       E =

          = J

Given data is as follows.

       mass (m) = 56 kg

                       = 56000 g   (1 kg = 1000 g)

 Specific heat = 4.18

As heat is releasing which means that value of E will be negative.

        -E =  

Her temperature at the top of the structure is .

Now, change in temperature is calculated as follows.

                            =

Thus, we can conclude that increase in her temperature at the top of the structure is .

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.