Asked Feb 24, 2020

How many grams of Kr are in a 6.29 L cylinder at 57.4 ∘C and 8.15 atm?


Expert Answer

Step 1

We know the relation from gas law equation:

Chemistry homework question answer, step 1, image 1


P = pressure in atm;

V = volume in litres;

n = number of moles;

T = temperature in Kelvin;

R = gas constant = 0.0821 atm L/mol K.

Step 2


Chemistry homework question answer, step 2, image 1

Atomic weight of Kr = 83.8 g/mol

Pressure, P = 8.15 atm

Temperature, T = 330.55 K

Volume, V = 6.29 L

Gas constant, R = 0.0821 Latm/mol K

Step 3

To determine:

The mass of Kr

Chemistry homework question answer, step 3, image 1


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