Average steady state concentration of 222Rn

Radioactive radon gas (222Rn) enters an average building at a rate of 5 picocuries per second per square meter of foundation area. Consider a house with a foundation of 400 square meters and a volume of 1000 cubic meters. Assume the house if well designed for energy conservation so that the ventilation rate is low and only one tenth of the air in the house is exchanged with outdoor air every hour. What will be the average steady state concentration of 222Rn (in Ci/cubic meter) in the house?

Pollution

How could energy conservation help reduce air pollution?

Greenhouse effect

a) Even if you do not believe in the concept, describe the greenhouse effect b) Name three gases that might be responsible for the greenhouse effect

Oxygenates

The Clean Air Act mandates that certain metropolitan areas must add oxygenates to the gasoline that is sold in that area. What is the reason that oxygenates are added to gasoline?

Greenhouse global warming

Many scientists suggest that there is a relationship between the greenhouse effect and global warming. Even if you do not believe in either concept, describe the relationship that these scientists are claiming between greenhouse effect and global warming.