Heat Capacity Video Lessons

Video Thumbnail

Concept:

Problem: Evaporating sweat cools the body because evaporation is an endothermic process: H2O(l) → H2O(g); ΔH˚rxn= + 44.01 kJ. Estimate the mass of water that must evaporate from the skin to cool the body by 0.55˚C. Assume a body mass of 95 kg and assume that the specific heat capacity of the body is 4.0 J/g•˚C.

FREE Expert Solution

Recall: The amount of heat needed to be absorbed or released to change the temperature of an object is given by:

where m = mass of the object(in g), c = specific heat capacity (in J/g • ˚C), and ΔT = change in temperature (in ˚C).

98% (443 ratings)
View Complete Written Solution
Problem Details

Evaporating sweat cools the body because evaporation is an endothermic process: H2O(l) → H2O(g); ΔH˚rxn= + 44.01 kJ. Estimate the mass of water that must evaporate from the skin to cool the body by 0.55˚C. Assume a body mass of 95 kg and assume that the specific heat capacity of the body is 4.0 J/g•˚C.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Heat Capacity concept. You can view video lessons to learn Heat Capacity. Or if you need more Heat Capacity practice, you can also practice Heat Capacity practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Gillespie's class at FIU.