Freon-12 () is used as a refrigerant in air conditioners and as a propellant in aerosol cans. calculate the number of molecules of freon-12 in 5.23 mg of freon-12. what is the mass of chlorine in 5.23 mg of freon-12?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

What are the first three quantum numbers for the electrons located in subshell 2s?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.