How many of the following are compounds? H2O, N2O4, NaOH, MnO2, HF
A) 1
B) 2
C) 3
D) 4
E) 5
Correct Answer:
Verified
Q35: Which of the following is an element?
A)
Q36: The process of filtering a sand-saltwater mixture
Q37: Helium is an example of
A) a homogeneous
Q38: Which of the following is an element?
A)
Q39: A(n) _ always has the same composition.
Q41: Gold is a relatively soft metal, which
Q42: The normal boiling point of water is
Q43: A solid substance is not considered matter.
Q44: A _ change involves a change in
Q45: An element consists of only single atoms
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