Neco 2025 Chemistry Question 5

Practice essay / theory question 5 from the 2025 Neco Chemistry examination. This question covers Stoichiometry, Combustion reactions, Molar volume .

Neco 2025 Chemistry Essay / Theory

Topics: Stoichiometry Combustion reactions Molar volume

Question 5 NECO • 2025 • CHEMISTRY • essay

The diagram shows the line‑angle structural formula of a hydrocarbon compound. Using the information from the diagram, answer the following questions.

Question Parts

( a )

Determine the molecular formula of the hydrocarbon shown in the diagram.

( b )

Write the balanced chemical equation for the complete combustion of one mole of this hydrocarbon in oxygen.

( c )

If 10.0 g of the hydrocarbon are burnt completely, calculate the volume of oxygen gas required at STP (22.4 L mol⁻¹). Give your answer to two significant figures.

( d )

Calculate the mass of carbon dioxide produced when the 10.0 g of hydrocarbon are completely combusted. Give your answer to three significant figures.

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About This Question

This is Neco 2025 Chemistry Question 5. It is one of the essay questions from the 2025 Neco Chemistry examination.

The question covers Stoichiometry, Combustion reactions, Molar volume .

View More Neco 2025 Chemistry Questions More Neco Practice Questions Back to Questions

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