A 70.0-kgkg person had a quarter-pound cheeseburger, french fries, and a chocolate shake. Item Carbohydrate (g)(g) Fat (g)(g) Protein (g)(g) Cheeseburger 49 40. 47 French fries 47 16 4 Chocolate shake 72 10. 10. Typical Energy Values for the Three Food Types Food type kcal/gkcal/g kJ/gkJ/g Carbohydrate 4 17 Fat 9 38 Protein 4 17 Using the tables on the left, calculate the total kilocalories for carbohydrates (round off the kilocalories to the tens place). Using the tables on the left, calculate the total kilocalories for fat (round off the kilocalories to the tens place). Using the table on the left, calculate the total kilocalories for protein (round off the kilocalories to the tens place). Determine the total kilocalories for the meal.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
A 70.0-kgkg person had a quarter-pound cheeseburger, french fries, and a chocolate shake.
| Item | Carbohydrate (g)(g) | Fat (g)(g) | Protein (g)(g) |
| Cheeseburger | 49 | 40. | 47 |
| French fries | 47 | 16 | 4 |
| Chocolate shake | 72 | 10. | 10. |
Typical Energy Values for the Three Food Types
| Food type | kcal/gkcal/g | kJ/gkJ/g |
| Carbohydrate | 4 | 17 |
| Fat | 9 | 38 |
| Protein | 4 | 17 |
Using the tables on the left, calculate the total kilocalories for carbohydrates (round off the kilocalories to the tens place).
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