A nutritionist has an enclosed cabinet used to calculate the calories in foods. The protocol requires that the food is set on fire as fuel under a water tank and then the temperature change in the water is equated to the calorie content in the foods. High calorie foods burn better than low calorie foods. Why?
a. High calorie foods have less water than low calorie foods and water cools the heat transfer reaction during combustion.
b. The third law of thermodynamics states that change of state reactions like combustion will result in decreased entropy.
c. Burning the foods is an energy transformation. The second law of thermodynamics says that no energy transformation is 100% efficient. Some of the energy is usually lost to the surroundings as heat.
d. The oxygen given off by high calorie foods is extremely combustible and that is what generates the heat. Foods that are burned have fewer calories after the protocol.
c. Burning the foods is an energy transformation. The second law of thermodynamics says that no energy transformation is 100% efficient. Some of the energy is usually lost to the surroundings as heat.
You might also like to view...
Stereocilia are important for the function of:
A. statocysts. B. lateral line systems. C. vestibular systems. D. All of the answer options are correct.
Formation of a pseudomembrane in the back of the throat is seen in cases of ________.
A. SARS B. tuberculosis C. diphtheria D. pharyngitis E. pertussis
Halophytic plants have adapted to the constantly changing salinity in _______ by developing filters in their roots that remove salts.
a. coral reefs b. rivers and streams c. lakes and ponds d. estuaries
What type of fatty acids include omega-3 and omega-6?
What will be an ideal response?