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WAEC ChemistryGhana

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Question 71

In an electrochemical cell, what is the purpose of the salt bridge?
ElectrochemistryElectrochemistrymedium

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Question 72

What type of polymerization occurs when monomers join together with the elimination of a small molecule such as water?
Polymer chemistryPolymer chemistryhard

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Question 73

Calculate the number of moles in 36g of water (H₂O). (Molar mass of H₂O = 18g/mol)
Calculation chemistry (stoichiometry)Calculation chemistryeasy

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Question 74

Which quantum number describes the shape of an electron's orbital?
Atomic structure and quantum numbersAtomic structure and quantum numberseasy

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Question 75

What type of chemical bond is formed when electrons are shared unequally between atoms?
Chemical bondingChemical bondingeasy

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Question 76

Which property is characteristic of gases but not solids or liquids?
Structure and properties of matterStructure and properties of mattereasy

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Question 77

Which of the following is a weak acid?
Acids, bases, saltsAcids, bases, saltsmedium

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Question 78

Which process involves the loss of electrons?
Redox reactionsRedox reactionseasy

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Question 79

What is the function of the salt bridge in an electrochemical cell?
ElectrochemistryElectrochemistrymedium

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Question 80

Which organic compound is formed by polymerization of ethene monomers?
Polymer chemistryPolymer chemistrymedium

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