22) A certain mixture of helium and argon weighing 5,00 g occupies a volume
of 10,0 liters at 25 °C and 1,00 atm pressure. What is weight of helium gas in the
mixture?
a) 25,2:
b) 36,8
c) 51,2
d) 77A:
e) 82,5
23) What is the total kinetic energy of 2 moles of $H_2$ gas at 1 atm pressure and
27 °C ? (in kj).
a) 9,35
b) 7,48
c) 5,53
d) 3,74
e) 1,87
24) The value of the Van der waals constant b for He (g) is 0,0266 L/mol.
What is the radius of a He atom? (in nm)
a) 0,138
b) 0,298
c) 0,552
d) 2,19
e) 12,3