4. The label of a lemon poppyseed energy bar lists the nutrition facts as 4 g of fat, 23 g...

4. The label of a lemon poppyseed energy bar lists the nutrition facts as 4 g of fat, 23 g of carbohydrate, and 10 g of protein and a mass of 68 g.

a. Using the energy values of carbohydrates, fats, and proteins (see Table 3.10), what are the kilocalories (Calories) for the lemon poppyseed bar? (Round off answers for each food type to the tens place.)

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b. What are the kilojoules for the lemon poppyseed bar? (Round off answers for each food type to the tens place.)

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c. If you obtain 160 kj, how many grams of the lemon poppyseed bar did you eat?

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d. If you are walking (840 kJ/h), how many minutes of walking will you need to expend the energy from two lemon poppyseed bars (see Table 3.13)?