Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (cfc) production was banned in 1996. however, there are about 100 million auto air conditioners in operation that still use cfc-12 (cf₂cl₂). these air conditioners are recharged from stockpiled supplies of cfc-12. if each of the 100 million automobiles contains 1.1 kg of cfc-12 and leaks 25% of its cfc-12 into the atmosphere per year, how much chlorine, in kg, is added to the atmosphere each year due to auto air conditioners? (assume two significant figures in your calculations.)

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?