Question 21
How many moles of oxygen gas are needed to completely react with 3 moles of hydrogen gas in the reaction 2H₂ + O₂ → 2H₂O?StoichiometryStoichiometrymedium
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Question 22
Which of the following is a strong base?Acids, bases, and saltsAcids, bases, and saltseasy
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Question 23
In a redox reaction, what is the oxidizing agent?Redox reactionsRedox reactionsmedium
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Question 24
What type of electrode is used as the site of reduction in an electrochemical cell?ElectrochemistryElectrochemistrymedium
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Question 25
How does increasing concentration of reactants affect reaction rate?Reaction kineticsReaction kineticsmedium
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Question 26
What is the effect of a catalyst on the position of chemical equilibrium?Chemical equilibriumChemical equilibriumhard
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Question 27
Which acid is commonly found in vinegar?Acids, bases, and saltsAcids, bases, and saltseasy
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Question 28
Which element has atomic number 12?Atomic structureAtomic structureeasy
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Question 29
What is the electron configuration of the element with atomic number 8?Atomic structureAtomic structuremedium
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Question 30
Which group of the periodic table contains halogens?The periodic tableThe periodic tableeasy
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