1. The problem statement, all variables and given/known data Determine the mean molecular weight of the Martian atmosphere which is composed of 95% carbon dioxide, 3% nitrogen, 1.6% argon. What is the gas constant for 1kg of such an atmosphere? Using the value for R from the last problem assuming the surface temperature of Mars is 0° C and has a cubic meter of gas weighs 4.6kg what is the surface pressure? 3. The attempt at a solution CO2 = 44 g/mol at 95% = 41.8 g/mol n2 = 28 g/mol at 3% = 0.84 g/mol Ar = 40 g/mol at 1.6% = .064 g/mol Martian atmos molecular weight = 42.704 Gas constant = 1/mean molecular weight? Gas constant using above formula 0.023417 Surface pressure = pv=mRT P=(mRT)/V P=((42.704)(0.023417)(273.15))/1 P=273.14988 Is this even close to right?