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WAEC Chemistry – Liberia

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Question 51

What is the main role of the anode in an electrochemical cell?
ElectrochemistryElectrochemistrymedium

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Question 52

Which polymer is formed by the polymerization of ethene monomers?
Polymer chemistryPolymer chemistrymedium

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Question 53

Which of the following quantum numbers indicates the shape of an atomic orbital?
Atomic structure and quantum numbersAtomic structure and quantum numberseasy

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Question 54

Which type of chemical bond is characterized by the transfer of electrons from one atom to another?
Chemical bondingChemical bondingeasy

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Question 55

Which of these substances is most likely to exist as a giant covalent structure?
Structure and properties of matterStructure and properties of mattermedium

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Question 56

What will happen to the rate of a chemical reaction if the temperature is increased?
Rates of reactions (kinetics)Rates of reactions (kinetics)easy

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Question 57

In an electrochemical cell, what is the direction of electron flow?
ElectrochemistryElectrochemistrymedium

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Question 58

Which polymer is formed by the polymerization of ethene?
Polymer chemistryPolymer chemistrymedium

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Question 59

Calculate the mass of carbon dioxide produced when 44g of propane (C3H8) is completely burned. (Molar masses: C=12, H=1, O=16)
Calculation chemistry (stoichiometry)Calculation chemistry (stoichiometry)hard

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Question 60

What type of bond is formed by the sharing of electron pairs between atoms?
Chemical bondingChemical bondingeasy

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