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Author Question: The correct name for MgF2 is ________. A) monomagnesium difluoride B) magnesium difluoride C) ... (Read 74 times)

jhjkgdfhk

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on: Aug 27, 2018
The correct name for MgF2 is ________.
 
  A) monomagnesium difluoride
  B) magnesium difluoride
  C) manganese difluoride
  D) manganese bifluoride
  E) magnesium fluoride

Question 2

When the following equation is balanced, the coefficient of dinitrogen pentoxide is ________. N2O5 (g) + H2O (l)  HNO3 (aq)
 
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5

Question 3

The correct result (indicating the proper number of significant figures) of the following calculation of the molecular mass for H2SO4 is ________.
 
  4  15.9994 + 32.066 + 2  1.0079
 
  A) 98.08
  B) 98.079
  C) 98.074
  D) 98.838
  E) 98.84

Question 4

The enthalpy change for the following reaction is -483.6 kJ: 2H2 (g) + O2 (g)  2H2O (g) Therefore, the enthalpy change for the following reaction is ________ kJ. 4H2 (g) + 2O2 (g)  4H2O (g)
 
  A) -483.6
  B) -967.2
  C) 2.34  105
  D) 483.6
  E) 967.2

Question 5

One difference between first- and second-order reactions is that ________.
 
  A) the half-life of a first-order reaction does not depend on A0; the half-life of a second-order reaction does depend on A0
  B) the rate of both first-order and second-order reactions do not depend on reactant concentrations
  C) the rate of a first-order reaction depends on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations
  D) a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
  E) None of the above are true.
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
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IRincones

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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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jhjkgdfhk

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Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

smrtceo

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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