The density of krypton gas at 1.21 atm and 50.0 degrees Celsius is _______g/L?

The density of krypton gas at 1.21 atm and 50.0 degrees Celsius is ___g/L?

2 Answers

  • One mole of Kr has a mass of 83.8 grams.

    At STP it would occupy 22.414 liters.

    At 1.21 atm and 50 C it will occupy

    (22.414 L) (1/1.21) (323.15/273.15) = still about 22 L, but use calculator.

    Then the density is 83.8 grams divided by (number of liters from previous line)

  • Volume of 1 mole (83.8 g) of Kr = V = nRT/P

    V = 1 x 0.082057 x (50.0+273.15) / 1.21 atm

    V = 21.9 L

    g/L = 83.8 g / 21.9 L = 3.82 g/L

Source:Fornoob.com

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