Multiple Choice
How many atoms of chlorine are present in one molecule of carbon tetrachloride (CCl_4)?
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3. Chemical Reactions
Molecular Formula
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How many carbon atoms are present in one molecule of CCl_4?
A
2
B
1
C
0
D
4
Verified step by step guidance1
Identify the molecular formula given, which is CCl_4. This formula represents one molecule composed of carbon (C) and chlorine (Cl) atoms.
Understand that the subscript number following an element symbol indicates how many atoms of that element are present in one molecule. For example, in CCl_4, the '4' after Cl means there are 4 chlorine atoms.
Note that if there is no subscript number after an element symbol, it means there is exactly one atom of that element in the molecule. In this case, there is no number after C, so there is 1 carbon atom.
Therefore, count the number of carbon atoms by looking at the element symbol C and its subscript (or lack thereof).
Conclude that one molecule of CCl_4 contains exactly 1 carbon atom.
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