Subsection 3.1. Formulae for Chemistry, O Level - revisedeck

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3.1. Formulae

A subsection of Chemistry, 5070, through 3. Stoichiometry

Listing 10 of 55 questions

The symbols and electronic structures for some elements are shown...

5070_s06_qp_1

MCQ

2006

Paper 1, Variant 0

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The element X forms a gaseous molecule X2. One volume of X2 combines with one volume of hydrogen to form two volumes of a gaseous hydride. What is the formula for the hydride of X?

5070_s07_qp_1

MCQ

2007

Paper 1, Variant 0

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Element X has the electronic structure 2,8,5. Element Y has the electronic structure 2,8,7. What is the likely formula of a compound containing only X and Y?

5070_s11_qp_11

MCQ

2011

Paper 1, Variant 1

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When a compound X is reacted with sodium carbonate, carbon dioxide gas is evolved. What could be the formula of compound X?

5070_s11_qp_11

MCQ

2011

Paper 1, Variant 1

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Element X has the electronic structure 2,8,5. Element Y has the electronic structure 2,8,7. What is the likely formula of a compound containing only X and Y?

5070_s11_qp_12

MCQ

2011

Paper 1, Variant 2

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When a compound X is reacted with sodium carbonate, carbon dioxide gas is evolved. What could be the formula of compound X?

5070_s11_qp_12

MCQ

2011

Paper 1, Variant 2

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Four compounds are shown...

5070_s14_qp_11

MCQ

2014

Paper 1, Variant 1

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An atom of element E forms a white oxide of formula EO. What is E?

5070_s17_qp_12

MCQ

2017

Paper 1, Variant 2

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Statements about empirical and molecular formulae are given. Which statement is correct?

5070_s24_qp_11

MCQ

2024

Paper 1, Variant 1

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In the ionic solid zinc phosphide, Zn3P2, what is the formula of the phosphide ion?

5070_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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Questions Discovered

55