What is the molecular formula for propane?
A) C2H8
B) C3H6
C) C3H8
D) C4H8
E) C4H10
Correct Answer:
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Q192: What are the primary atoms found in
Q193: How many carbon and hydrogen atoms are
Q194: What is the formula for perchloric acid?
A)HClO
B)HClO3
C)HClO4
D)HClO2
E)HCl
Q195: An atom of 118Xe contains _ neutrons.
A)54
B)172
C)64
D)110
E)118
Q196: There are _ protons,_ electrons,and _ neutrons
Q198: 87 pm is the same as _
Q199: In the symbol below,x = _.
Q200: What is the molecular formula for heptane?
A)C6H12
B)C6H14
C)C7H14
D)C7H16
E)C7H18
Q201: Which one of the following is a
Q202: How many electrons are there in one
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