Igcse Model Questions Vol1 2023 Chemistry Question 6

Practice objective / multiple choice question 6 from the 2023 Igcse Model Questions Vol1 Chemistry examination.

Igcse Model Questions Vol1 2023 Chemistry Objective / Multiple Choice Medium Difficulty

Question 6 IGCSE_MODEL_QUESTIONS_VOL1 • 2023 • CHEMISTRY • objective

A 0.90 g sample of glucose (\(\mathrm{C_6H_{12}O_6}\)) is analysed. Using atomic masses C = 12.01 g mol\(^{-1}\), H = 1.008 g mol\(^{-1}\), O = 16.00 g mol\(^{-1}\), calculate the number of molecules present in the sample. Give your answer in scientific notation to two significant figures.

Answer Options

A. 4.2×10^21

B. 2.5×10^21

C. 3.0×10^20

Correct Answer D. 3.0×10^21

Correct Answer

Correct Option:

3.0×10^21

About This Question

This is Igcse Model Questions Vol1 2023 Chemistry Question 6. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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Igcse Model Questions Vol1 2023 Chemistry Question 6

A 0.90 g sample of glucose (\(\mathrm{C_6H_{12}O_6}\)) is analysed. Using atomic masses C = 12.01 g mol\(^{-1}\), H = 1.008 g mol\(^{-1}\), O = 16.00 g mol\(^{-1}\), calculate the number of molecules present in the sample. Give your answer in scientific notation to two significant figures.

Answer Options

About This Question

Master the Exam!

A 0.90 g sample of glucose (\(\mathrm{C_6H_{12}O_6}\)) is analysed. Using atomic masses C = 12.01 g mol\(^{-1}\), H = 1.008 g mol\(^{-1}\), O = 16.00 g mol\(^{-1}\), calculate the number of molecules present in the sample. Give your answer in scientific notation to two significant figures.