Igcse Model Questions Vol1 2022 Chemistry Question 4

Practice objective / multiple choice question 4 from the 2022 Igcse Model Questions Vol1 Chemistry examination.

Igcse Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Hard Difficulty
Question 4 IGCSE_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective

A batch contains 10.0 g of ethene (\(\ce{C2H4}\)) and 5.0 g of propene (\(\ce{C3H6}\)). Under catalytic polymerisation, 80 % of the ethene is converted to polyethylene and 70 % of the propene is converted to polypropylene. The average degree of polymerisation is 5000 for polyethylene and 3000 for polypropylene. Assuming each polymer chain contains the same number of monomer units, calculate the total number of polymer molecules formed (both polymers combined). Give your answer in scientific notation to two significant figures.

Answer Options

A. 4.2×10¹⁹
Correct Answer B. 5.1×10¹⁹
C. 6.3×10¹⁹
D. 3.8×10¹⁸
Correct Answer
B
Correct Option:
5.1×10¹⁹

About This Question

This is Igcse Model Questions Vol1 2022 Chemistry Question 4. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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