Ammonia is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Correct Answer:
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Q102: What is the chemical formula for iron(III)sulfate?
A)Fe3S
B)Fe3SO4
C)Fe2S3
D)Fe2(SO4)3
Q106: In which set do all elements tend
Q111: Which of the following is the correct
Q114: In which of the following sets do
Q115: How many electrons are in the ion
Q117: Which one of the following compounds contains
Q119: What is the identity of element Q
Q122: Gold is an example of:
A)a compound
B)an element
C)a
Q211: How many electrons are in the ion,Cu2+?
A)27
B)29
C)31
D)64
Q218: How many electrons are in the ion,PO43-?
A)26
B)44
C)47
D)50
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