By refusing to give up her seat to a white man on a Montgomery, Alabama, city bus in 1955, black seamstress Rosa Parks (1913â2005) helped initiate the civil rights movement in the United States.
Partial R-22 freon tank with about 27 pounds remaining in it. The tanks gross weights 33.0 pounds. So there is about 27 pounds of freon on left in the tank.
The big issue today in using Freon and other refrigerants is the elimination of CFC's which are chlorofluorocarbon refrigerants. These new refrigerants are required to have low ozone depletion potential and low global warming potential, as well as keeping energy efficiency in perspective.