Freon-12 or dichlorodifluoromethane is a common refrigerant and propellant. 5.69 mg of Freon-12 contains 2.8 × 10¹⁹ molecules and the mass of Cl in Freon-12 is 0.94049 gm.
<h3>What is Freon-12?</h3>
Freon-12 (CCl₂F₂) is a gas that was used in manufacturing propellants and refrigerants. It is a non-inflammable gas also called dichlorodifluoromethane.
Molar mass of CCl₂F₂ = 1 × 12g/mol + 2 × 35.5g/mol + 2 × 19g/mol = 121g/mol
Molecules in 5.69 mg Freon-12 are calculated as:
5.69 mg × 0.001 gm × 1 mol × 6.02 × 10²³ molecules ÷ 121 gm = 0.0002830 × 10²³ molecules = 2.8 × 10¹⁹ molecules
There are two chlorine atoms in a Freon-12 compound so the mass is calculated as:
(5.69 × 0.001 × 2) ÷ 121 = 0.94049 gm of Cl
Therefore, 0.94049 gm of Cl is present in Freon -12.
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Your question is incomplete, but most probably your full question was, that Freon-12 (CCl₂F₂) is used as a refrigerant in air conditioners and as a propellant in aerosol cans. Calculate the number of molecules of Freon-12 in 5.69 mg of Freon-12. What is the mass of chlorine in 5.69 mg of Freon-12?