Multiple Choice
How many atoms of oxygen are present in 2Ca(NO3)2?
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3. Chemical Reactions
Molecular Formula
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Which of the following is the correct molecular formula for glucose?
A
C5H10O5
B
C12H22O11
C
C6H6O6
D
C6H12O6
Verified step by step guidance1
Understand that the molecular formula of a compound represents the exact number of each type of atom in a molecule.
Recall that glucose is a simple sugar (monosaccharide) commonly known to have 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
Compare the given options to the known molecular formula of glucose, which is \(C6H12O6\).
Eliminate options that do not match the count of atoms in glucose: \(C5H10O5\) (which is the formula for ribose), \(C12H22O11\) (which is the formula for sucrose, a disaccharide), and \(C6H6O6\) (which does not correspond to glucose).
Confirm that the correct molecular formula for glucose is \(C6H12O6\) because it matches the known composition of glucose molecules.
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