1. ibuprofen (c13h18o2) is the active ingredient in many nonprescription pain relievers. each tablet contains 200 mg of ibuprofen, and a typical adult dose is two tablets every six hours.
• determine the molar mass of ibuprofen. show all steps to find the answer.
• calculate the number of moles of ibuprofen in a single tablet. show all steps to find the answer.
• calculate the number of moles of ibuprofen that an adult would have taken if she took four doses of ibuprofen in one day. show all steps to find the answer.
asap need to get this done fast

Answer :

The molar mass of ibuprofen is, 206.29 g/mole.

The number of moles of ibuprofen in a single tablet is, 0.000969 moles

The number of moles of ibuprofen in four doses is, 0.007752 moles

Solution : Given,

Molar mass of carbon = 12.01 g/mole

Molar mass of hydrogen = 1.01 g/mole

Molar mass of oxygen = 15.99 g/mole

1) Now we have to calculate the molar mass of ibuprofen.

Molar mass of ibuprofen, =

The molar mass of ibuprofen = 206.29 g/mole

2) Now we have to calculate the moles of ibuprofen.

Formula used :

Given : Mass of ibuprofen = 200 mg = 0.2 g         (1 mg = 1000 g)

The moles of ibuprofen = 0.000969 moles

3) Now we have to calculate the number of moles of ibuprofen for four doses.

Number of tablets in one dose = 2

Total number of tablets in 4 doses = 4 × 2 = 8

Number of moles of ibuprofen in 8 tablets =