Domanda del libro di testo
Using energy values from TABLE 3.8, determine each of the following:
c. If Charles consumes 1800 kcal per day, he will maintain his weight. Would he lose weight on his new diet?
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Ch.3 Matter and Energy
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353
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TOC.tableOfContents
- Ch.1 Chemistry in Our Lives11
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy54
- Ch.4 Atoms and Elements51
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions41
- Ch.8 Gases29
- Ch.9 Solutions51
- Ch.10 Acids and Bases and Equilibrium65
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons78
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones83
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides90
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis83
- Ch.18 Metabolic Pathways and ATP Production67
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Non è quello che usi tu?Cambia libro di testo
Capitolo 3, Problema 58b
For the amount of exercise that Charles did for one week in part a, if expending 3500 kcal is equal to a loss of 1.0 lb, how many pounds did he lose?
Guida verificata passo dopo passo1
Step 1: Identify the relationship between calories expended and weight loss. The problem states that expending 3500 kcal corresponds to a loss of 1.0 lb.
Step 2: Determine the total number of calories Charles expended during the week. This information should be obtained from part a of the problem.
Step 3: Set up a proportion to calculate the weight loss. Use the relationship: \( \text{Weight Loss (lb)} = \frac{\text{Calories Expended}}{3500} \).
Step 4: Substitute the total calories expended from part a into the formula. Ensure the units are consistent (kcal).
Step 5: Simplify the expression to find the weight loss in pounds. This will give the result for how many pounds Charles lost during the week.
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Caloric Deficit
A caloric deficit occurs when the number of calories burned exceeds the number of calories consumed. In the context of weight loss, creating a caloric deficit is essential, as it leads to the body utilizing stored fat for energy. Understanding this concept is crucial for calculating weight loss based on exercise and dietary intake.
Weight Loss Calculation
Weight loss can be quantified by understanding the relationship between calories burned and pounds lost. Specifically, a deficit of 3500 kcal is generally accepted as equivalent to losing 1 pound of body weight. This calculation allows individuals to estimate their weight loss based on their caloric expenditure from exercise.
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Percorso guidato
01:10
Calculating Molar Mass
Exercise Energy Expenditure
Exercise energy expenditure refers to the number of calories burned during physical activity. This can vary significantly based on the type, intensity, and duration of the exercise performed. Accurately estimating this expenditure is vital for determining how much weight can be lost through exercise alone.
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Percorso guidato
01:26Nature of Energy
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Calculate the energy to heat two cubes (gold and aluminum) each with a volume of 10 cm3 from 15 °C to 25 °C. Refer to Tables 2.8 and 3.11.
1943
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A 70.0-kg person had a quarter-pound cheeseburger, french fries, and a chocolate shake.
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d. Using TABLE 3.10, determine the number of hours of running needed to burn off the kilocalories in this meal.
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Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following:
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2231
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Domanda del libro di testo
Using energy values from TABLE 3.8, determine each of the following:
d. If expending 3500 kcal is equal to a loss of 1.0 lb, how many days will it take Charles to lose 5.0 lb?
941
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