If a person consumes 5.33 × 105 kcal in a day and one barrel of oil can produce 3.70 × 106 kcal, what is the equivalent of energy consumed per year by that person in terms of barrels of oil?

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?