Neco 2023 Chemistry Question 1

Practice practical question 1 from the 2023 Neco Chemistry examination. This question covers Atomic Structure .

Neco 2023 Chemistry Practical

Topic: Atomic Structure

Question 1 NECO • 2023 • CHEMISTRY • practical

A sample of an unknown metal X is converted to its oxide by heating in air. The mass of the metal before heating is 1.250 g and the mass of the oxide obtained after heating is 1.950 g. It is known that the oxide formed has the empirical formula X₂O₃.

( a )

Write the balanced chemical equation for the oxidation of X.

( b )

Calculate the atomic mass of X (in g mol⁻¹). Give your answer to one decimal place.

( c )

State one source of experimental error that could affect the calculated atomic mass.

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This is Neco 2023 Chemistry Question 1. It is one of the practical questions from the 2023 Neco Chemistry examination.

The question covers Atomic Structure .

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