Question 201
How many moles of oxygen gas (O₂) are there in 44 grams of O₂? (Molar mass O₂ = 32 g/mol)Mole conceptMole conceptmedium
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Question 202
According to collision theory, increasing the temperature increases the rate of reaction because:Rates and equilibriumRates and equilibriummedium
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Question 203
What is the atomic number of an element with 15 protons?Atomic structureAtomic Structureeasy
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Question 204
How many moles are present in 44 grams of carbon dioxide (CO₂)? (Molar mass of CO₂ = 44 g/mol)Mole conceptMole Concepteasy
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Question 205
In an electrochemical cell, oxidation occurs at the:ElectrochemistryElectrochemistrymedium
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Question 206
Which of the following compounds is an example of an alkane?Organic chemistryOrganic Chemistrymedium
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Question 207
What is the major product when ethene reacts with bromine (Br₂)?Organic chemistryOrganic Chemistryhard
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Question 208
In a reversible reaction at equilibrium, which statement is true?Rates and equilibriumChemical Equilibriummedium
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Question 209
How many particles are present in 2 moles of a substance?Mole conceptMole concepteasy
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Question 210
Which of the following solutions has the highest concentration of hydrogen ions (H+)?Acids, bases, saltsAcids, bases and saltseasy
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