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Chemistry
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27 Nov 2019

The nutritional calorie (Calorie) is equivalentto 1 kcal. One pound of body fat is equivalent to about 4.1 x103 Calories.

If a runner expends 1850 kJ/h, how long does shehave to run to work off 3.55 lb of body fat?

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Trinidad Tremblay
Trinidad TremblayLv2
27 Nov 2019

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Related questions

(A) If a 3 oz candy bar produces 200 kcal on oxidation in the body, and if this energy were convertible into work, how many candy bars would a 160 -lb man have to eat in order to climb Mt. Washington (6288 ft) from Pinkhan Notch (2032 ft) without his having to call on stored energy reserves? (B) If the oxidation of fat produces 400 kcal lb-1 , what is the lower limit of weight that a 120 -lb woman will lose in making this climb if she eats nothing en route and if all of the required energy is supplied from the oxidation of the fat reserves in the body?

Calculated DRI: 3570

Your Basal Metabolic Rate is: 2136 calories.

Your Average Daily Calorie Need Is: 2563 calories

Explain why in order to lose weight you would need to ingest fewer Calories per day, or expend enough energy per day, so the net ingested daily Calories are less than the calculated DRI. How long would it theoretically take to lose the equivalent of one pound of fat if you ingested 100 calories/day less than the DRI?

Would you agree that it basically does not matter what kind of food you eat to lose weight as long as the number of net daily Calories is less than the DRI and why?

Why do you think the BMR and DRI can change with body mass and fitness levels? Go to your kitchen and chose a favorite food product with a Nutrition Label and note the Caloric content. How much of that food (by mass or volume) could you ingest in a single day to equal the DRI if that was the only food you ingested? Please report the Caloric value per mass (or serving) of your food item and the total amount you could ingest.

#1. The label of a lemon poppyseed bar lists the nutrition facts as5.0 g of fat, 25 g of carbohydrates and 9.0 g of protein.

Info: Caloric Values of Carb (4 kcal/g), fat (9 kcal/g) and protein(4kcal/g)...
total kilocalories= 180 kcal
Info #2: Energy Value of Lemon Bar in kJ:
760 kJ

Questions:
If you obtain 165 kJ, how many grams of the lemon poppyseed bar didyou eat?

If you are walking 840 kJ/h, how many minutes will you need to burnoff teh calories of two lemon bars?

In a box of nails, there are 75 iron nails weighing .280 lb. Thedensity of iron is 7,.86 g/cm^3. The specific heat of iron is .452J/g Cel.

Questions: If 30 nails are added to a graduated cylinder containing23.3 mL of water, what is the new level of water in tehcylinder?
How many joules must be added to the nails in the box to raise thetemperature from 12 to 129 Deg Celsius?
If al the iron nails at 55.0 C are added to the 321 g of water at4.0 C, what will be the final temperature C of the nails and water?

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