calculate the mass in grams of 2.74 l of co gas measured at 33°c and 945 mmhg
- Answers. Best Answer: p = 945/760=1.24 atm T = 33 + 273 =306 K moles CO = pV/RT = 1.24 x 2.74 / 0.08206 x 306=0.135 mass CO = 0.135 mol x 28.01 g/mol=3.78 g.Source(s): Dr.A Â· 5 years ago. Thumbs up.nswers. Best Answer: p = 945/760=1.24 atm T = 33 + 273 =306 K moles CO = pV/RT = 1.24 x 2.74 / 0.08206 x 306=0.135 mass CO = 0.135 mol x 28.01 g/mol=3.78 g.