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The molecular formula for vitamin C is C6H8O6. What is the empirical formula?
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3. Chemical Reactions
Empirical Formula
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Which of the following is an example of an empirical formula?
A
C2H4
B
C6H12O6
C
CH2O
D
H2O2
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Understand that an empirical formula represents the simplest whole-number ratio of atoms of each element in a compound.
Look at each given formula and determine the ratio of atoms for each element.
For C2H4, divide the subscripts by 2 to simplify: C2H4 becomes CH2, which is the empirical formula.
For C6H12O6, divide the subscripts by 6 to simplify: C6H12O6 becomes CH2O, which is the empirical formula.
For H2O2, divide the subscripts by 2 to simplify: H2O2 becomes HO, which is the empirical formula.
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