One mole of which element has the smallest mass?
A) Co
B) Zn
C) Ni
D) Ru
Correct Answer:
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Q195: Ethane is an example of
A)a compound.
B)an element.
C)a
Q196: What is the standard isotope that is
Q197: Hydrochloric acid is an example of
A)a compound.
B)an
Q198: A cake is an example of
A)a compound.
B)an
Q199: How many electrons are in the ion,Fe2+?
A)24
B)26
C)28
D)56
Q201: Which of the following is the correct
Q202: Which of the compounds,Ca H2,H2O ,C H4,XeF4
Q203: The chemical formula for the nitrite ion
Q204: The compound,ClO ,is named
A)chlorite.
B)hypochlorite.
C)chlorine monoxide.
D)chlorine (II)oxide.
Q205: An aqueous solution of H Cl is
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