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Chapter 3: Q3.1 CYL (page 131)

Acetaminophen, C8H9NO2 is a covalent compound and an active ingredient in several popular nonprescription pain medicines such as Tylenol, what is the molecular mass(amu) for this compound.

Short Answer

Expert verified

Molecular mass of acetaminophen 151.16amu

Step by step solution

01

Step 1-Counting number of Atom

In acetaminophen, we have 8 carbon atoms, 9 hydrogen atoms, 1 nitrogen atom, and 2 oxygen atoms.

02

Step 2- Calculating molecular mass

After calculating the number of atoms, we have to add their mass multiplied by the times they are present in the atom

Carbon molecular mass=12.0107

Hydrogen molecular mass = 1.0078

Nitrogen molecular mass = 14.0067

Oxygen molar mass = 15.999

Molecular mass of compound = 12.0107 x 8 + 9 x 1.0078 + 1 x 14.0067 + 2 x 15.999

=151.16 amu

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