1. (12+13=25 Points; 10+20 minutes-including uploading; Unit Conversion, concentration) a. You are preparing a gas standard by injecting 43mg of chloroform into 1L container. Calculate the concentration of chloroform in ppm. b. Mars' atmosphere is composed of 95.32% carbon dioxide, 2.7% nitrogen, 1.6% argon and 0.13% oxygen. The atmospheric pressure at the surface is 6.35mbar which is over 100 times less Earth's. Temperature is 20C. I. Calculate the molecular weight of martian atmosphere II. Calculate the density of martian atmosphere (MWs of Ar= 40g/mole;CO2=44g/mole;O2=32g/mole;N2=28g/mole )