QUESTION 20 A slice of pizza contains 17 g of fat, 25 g of carbohydrate, and an unknown amount of protein. If the piece of pizza contains a total of 750 kcal,
how many grams of protein does the slice of pizza contain? (The accepted caloric values for foods are 4.0 kcal/g for carbohydrate, 9.0 kcalg
for fat, and 4.0 kcal/g for protein.) Report the answer to 2 significant figures.
429
O Can not be determined from the given information.
O 649
O 749
120 g
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Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

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