A sample of ibuprofen (102.9 mg) was dissolved completely in 50 mL ethanol. One mL of this solution was diluted to 200 mL with water. The absorbance of this solution at 221 nm was found to be 0.453 in a 1 cm cell. Calculate the percentage purity of the sample, given that the specific absorbance of ibuprofen at 223 nm in water is 449.  (5 marks)

Is the Final Exam maditory? 

What happens if you score an 95% or above on on eavry test? 

How do you do your Homework?

Is attending class an option?

This class meets Tuesdays & Thursdays from 1:15 to 3:20

You will receive a course grade of “F” for missing 25% of scheduled class meetings, excused or unexcused.

This class is a Civitae Historical/Contemporary Perspective class. 

You CAN use cell phones, computers, tablets and other electronic devices during the lecture without your professor’s permission. 

If you were caught for plagiarism, the penalty may include a grade of zero on the assignment in question, a grade of “F” in the course, and/or referral to the Longwood University Judicial Board.