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NECTA ChemistryTanzania

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Question 61

What is the standard electrode potential of a hydrogen electrode?
ElectrochemistryElectrochemistry and Redox Reactionsmedium

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Question 62

According to the collision theory, increasing temperature increases reaction rate because:
Rates and equilibriumRates of Chemical Reactionsmedium

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Question 63

In the dynamic equilibrium of a chemical reaction, which statement is true?
Rates and equilibriumChemical Equilibriummedium

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Question 64

Which of the following is the correct electron configuration for a neutral oxygen atom?
Atomic structureElectron Configuration and Atomic Structurehard

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Question 65

What is the atomic number of an element that has 17 protons?
Atomic structureAtomic structure basicseasy

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Question 66

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

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Question 67

At equilibrium in a closed system, what is true about the rates of the forward and reverse reactions?
Rates and equilibriumChemical equilibriummedium

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Question 68

Which statement best describes the octet rule in bonding?
Chemical bondingOctet rule and bonding principleshard

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Question 69

How many moles of oxygen atoms are present in 2 moles of oxygen gas (O2)?
Mole conceptMole conceptmedium

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Question 70

Which of the following is a characteristic of a base?
Acids, bases, saltsAcids, bases, saltseasy

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