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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

          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

Show more…

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 H2 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

Added by Paul A.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Dinesh Singh

02/06/2022

Step 1

To find the weight of helium gas, we need to first calculate the moles of helium in the mixture using the ideal gas law equation: PV = nRT. n = (PV) / RT n = (1.00 atm * 10.0 L) / (0.0821 L*atm/mol*K * 298 K) n = 0.405 moles Next, we can calculate the weight of Show more…

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A certain mixture of helium and argon weighing 5.00g occupies a volume of 10.0 liters at 25°C and 1.00 atm pressure. What is the weight of helium gas in the mixture? a) 25.2 b) 36.8 c) 51.2 d) 77.4 What is the total kinetic energy of 2 moles of H2 gas at 1 atm pressure and 27°C? (in kJ) a) 9.35 b) 7.48 c) 5.53 d) 3.74 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

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