Multiple Choice
Which of the following chemical compounds is the main component of dry ice?
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3. Chemical Reactions
Molecular Formula
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How many iodine atoms are present in one molecule of CI4?
A
4
B
1
C
0
D
2
Verified step by step guidance1
Identify the chemical formula given: CI4. This represents one molecule composed of carbon (C) and iodine (I) atoms.
Understand the subscript notation in chemical formulas: the number following an element symbol indicates how many atoms of that element are present in one molecule.
In CI4, the subscript '4' after iodine (I) means there are 4 iodine atoms in one molecule.
The carbon (C) has no subscript, which means there is only 1 carbon atom in the molecule.
Therefore, the number of iodine atoms in one molecule of CI4 is 4.
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