Harvey claims that he annihilated a 1.00 lb bag of chocolate-chip cookies after playing basketball for 3

Question:

Harvey claims that he annihilated a 1.00 lb bag of chocolate-chip cookies after playing basketball for 3 h. 

(a) If Harvey had truly annihilated the mass in the cookies, how much energy would be produced? 

(b) How many kilowatt-hours of electric energy is this?

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