Hydrofluorocarbons (hfc) have replaced chlorofluorocarbon gases (cfc) in refrigerators.
what is the molar mass of an hfc if 60.0 g occupies a volume of 15.0 l at 25.0 °c and 1.00 atm?

Displacement is the slope of a velocity vs. time graph a. true b. false

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u. s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm