Post Utme Ui 2025 Chemistry Question 17

Practice objective / multiple choice question 17 from the 2025 Post Utme Ui Chemistry examination.

Post Utme Ui 2025 Chemistry Objective / Multiple Choice
Question 17 POST_UTME_UI • 2025 • CHEMISTRY • objective

A sample of polystyrene \( average molecular weight = 200,000 g/mol \) is dissolved in 100 mL of toluene. If the concentration of the solution is 0.5 g/mL, what is the number of polymer chains per unit volume?

Answer Options

A. 1.0 x 10^17 chains/mL
B. 1.0 x 10^18 chains/mL
Correct Answer C. 1.0 x 10^19 chains/mL
D. 1.0 x 10^20 chains/mL
Correct Answer
C
Correct Option:
1.0 x 10^19 chains/mL

About This Question

This is Post Utme Ui 2025 Chemistry Question 17. It is one of the objective questions from the 2025 Post Utme Ui Chemistry examination.

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