In nature, sulfur is most commonly found in ________.
A) pure elemental sulfur
B) sulfur oxides
C) metal sulfides
D) sulfuric acid
E) H2S
Question 2
At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N2O5(g) 4NO2 (g) + O2 (g) When the rate of formation of NO2 is 5.5 10-4 M/s, the rate of decomposition of N2O5 is ________ M/s.
A) 2.2 10-3
B) 1.4 10-4
C) 10.1 10-4
D) 2.8 10-4
E) 5.5 10-4
Question 3
The combustion of propane (C3H8 ) in the presence of excess oxygen yields CO2 and H2O: C3H8 (g) + 5O2 (g) 3CO2 (g) + 4H2O (g) When 2.5 mol of O2 are consumed in their reaction, ________ mol of CO2 are produced.
A) 1.5
B) 3.0
C) 5.0
D) 6.0
E) 2.5
Question 4
Which of the following molecules has hydrogen bonding as its only intermolecular force?
A) HF
B) H2O
C) C6H13NH2
D) C5H11OH
E) None, all of the above exhibit dispersion forces.
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Nitrogen Oxides (NOX)