Levels Tought:
Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
Last Sign in: | 235 Weeks Ago, 1 Day Ago |
Questions Answered: | 12843 |
Tutorials Posted: | 12834 |
MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
Question 1
What is the free element in the following chemical reaction?
KClO3 (s) → KCl (s) + O2 (g)
a.potassium
b.chlorine
c.oxygen
d.all of the above
e.there is no free element
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Question 2
Which of the following elements have an oxidation number of -1?
a.sodium
b.chlorine
c.flourine
d.bromine
e.b,c, and d
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Question 3
Which of the following have an oxidation number of +2?
a.helium
b.sodium
c.potassium
d.magnesium
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