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Author Question: When the following equation is balanced, the coefficient of sulfur dioxide is ________. PbS (s) + O2 ... (Read 41 times)

@Brianna17

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on: Aug 27, 2018
When the following equation is balanced, the coefficient of sulfur dioxide is ________. PbS (s) + O2 (g)  PbO (s) + SO2 (g)
 
  A) 5
  B) 1
  C) 3
  D) 2
  E) 4

Question 2

The correct result (indicating the proper number of significant figures) of the following addition is ________. 12 1.2 0.12 + 0.012
 
  A) 13
  B) 13.3
  C) 13.33
  D) 13.332
  E) none of the above

Question 3

The reaction 2NO2  2NO + O2
 
  follows second-order kinetics. At 300 C, NO2 drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M-1s-1.
  A) 0.096
  B) 0.65
  C) 0.81
  D) 1.2
  E) 0.54

Question 4

Many common garden plants are poisonous.
 
  Indicate whether the statement is true or false
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
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cloud

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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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@Brianna17

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Reply 2 on: Aug 27, 2018
Excellent

miss_1456@hotmail.com

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Reply 3 on: Yesterday
:D TYSM

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