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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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Most popular questions from this chapter

Determine the mass of each of the following:

(a) 2.345 mol LiCl

(b) 0.0872 mol acetylene, C2H2

(c) 3.3×10−2 mol Na2 CO3

(d) 1.23×103 mol fructose, C6 H12 O6

(e) 0.5758 mol FeSO4(H2O)7

What mass of a 4.00% NaOH solution by mass contains 15.0 g of NaOH?

For each of the following pairs of ions, write the symbol for the formula of the compound they will form:

  1. \({K^ + },{O^{2 - }}\)
  2. \(NH_4^ + ,PO_4^{3 - }\)
  3. \(A{l^{3 + }},{O^{2 - }}\)
  4. \(N{a^ + },CO_3^{2 - }\)
  5. \(B{a^{2 + }},PO_4^{3 - }\)

Determine the number of moles of compound and the number of moles of each type of atom in each of the following:

(a) 25.0 g of propylene, C3H6

(b) 3.06×10−3 g of the amino acid glycine, C2H5NO2

(c) 25 lb of the herbicide Treflan, C13H16N2O4F (1 lb = 454 g)

(d) 0.125 kg of the insecticide Paris Green, Cu4(AsO3)2(CH3CO2)2

(e) 325 mg of aspirin, C6H4(CO2H) (CO2CH3)

D5W is a solution used as intravenous fluid. It is 5.0% by mass solution of dextrose C6H12O6 in water. If the density of D5W is 1.029g/ml. Calculate the molarity of dextrose in the solution.
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