401. 7.5 g of gas occupies 5.6 L of volume at STP. The gas is:
A) NO
(B) N2O
(C) CO
D) CO2
402. 56 g of N2, 44 g of CO2, and 16 g of CH4 make up a gaseous mixture, which has a total pressure of 720 mm of Hg. Methane has the partial pressure of:
(A) 75 torr
(B) 160 torr
C) 180 torr
(D) 220 torr
403. If two moles of an ideal gas at 540 K have a volume of 44.8 L, Then its pressure will be approximately:
(A) 1 ATM
B) 2 ATM
(C) 3 ATM
(D) 4 ATM
404. A gas diffuses four times quickly as oxygen gas. The molecular weight of the gas is:
A) 2
(B) 4
(C) 6
D) 8
405. Helium gas has _ times higher diffusion rate than SO2 gas:
(A) Two
(B) Four
C) Eight
(D) Sixteen
406. The compressibility factor of an ideal gas is:
A) 1
(B) 2
(C) 3
(D) 4
407. The temperature below which a gas can be liquefied by applying pressure is:
(A) Inversion Temp
B) Critical Temp
(C) Normal Temp
(D) Absolute Zero
408. Noble gases are generally chemically unreactive because they have:
a) High electronegativity
b) Low ionization energy
c) A full outer electron shell
d) A high electron affinity
409. The valence shell of noble gases contains:
a) 1 electron
b) 2 electrons
c) 6 electrons
d) 8 electrons
410. Which noble gas is used in some types of ion propulsion systems for spacecraft?
a) Helium
b) Neon
c) Argon
d) Xenon
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