Question

Calculate the density, in grams per liter, of a gas at STP if 3.94 L of the gas at 43.9 'C and 787.1 mmHg weighs 0.265 g. density: 1060.997

Answer 1

Answers using Heal gas law PV = nRT P= (m/v) RT where mamass . . r volume po density P-a) Pressure n moles T temprate m molar mass R=0.08206 atm. molik P- temo : video PM m RI gluen v= 3.946, m= 0.265 g at P= 787.1 mm Hg and temp 43.guc i t o Calculate density - mus Volume

density s= m = 10.2652 3.942 1 atm = 760 mm Hg P = 787.) mm Hg x Lotu roomming) P= ") atm T= (273.15 +43.9) K = 317.05 k using s= PM RT -0 RX 317.05K Now at STP T = 273.15k and P= 1 atm . Bopp = (1 atm) m RX 273.15 K How dividing eur @ by ear-o SP (ft etm) un ) 0.265 Rx 273.15 K 3.94 L , (1911 atm) in R X 317.05 K / =) Potp = (01309)x fem. os *) de at stp density is (7.54 x 10-2 2/2) 273.15 K E = 0.07 atim 087-