We are asked to calculate the **amount of Chlorine (in kg) is added to the atmosphere each year **due to the cars that contains CFC-12 as conditioners.

We know that:

- each car has 1.2 kg of CFC-12
- each car leaks 26% of CFC-12 per year
- there are 100 million cars → 1.0x10
^{8 }cars

Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, many older cars still have air conditioners that use
CFC-12 (CF_{2}Cl_{2}). These air conditioners are recharged from stockpiled supplies of CFC-12. Suppose that 100 million automobiles each contain 1.2 kg of CFC-12 and leak 26 % of their CFC-12 into the atmosphere per year.

How much chlorine, in kg, is added to the atmosphere each year due to these air conditioners?

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