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Author Question: In nature, sulfur is most commonly found in ________. A) pure elemental sulfur B) sulfur oxides ... (Read 178 times)

washai

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on: Aug 27, 2018
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.
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
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jxjsniuniu

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Reply #1 on: Aug 27, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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washai

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Reply 2 on: Aug 27, 2018
:D TYSM

phuda

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Reply 3 on: Yesterday
Excellent

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