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1. Freon (CCl2F2) is commonly used in refrigerators and air conditioners as a coolant. How many grams of fluorine are there in the 2.00 lbs of Freon necessary for an air conditioner? (1 lb = 454 g)

Sagot :

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Answer:

285g of fluorine

Explanation:

To solve this problem we need to find the mass of Freon in grams. Then, with its molar mass we can find moles of freon and, as 1 mole of Freon, CCl₂F₂, contains 2 moles of fluorine, we can find moles of fluorine and its mass:

Mass Freon:

2.00lbs * (454g / 1lb) = 908g of Freon

Moles freon -Molar mass: 120.91g/mol- and moles of fluorine:

908g of Freon * (1mol / 120.91g) =

7.5 moles of freon * (2moles Fluorine / mole Freon): 15 moles of fluorine

Mass fluorine -Atomic mass: 19g/mol-:

15 moles F * (19g / mol) =

285g of fluorine

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