Question 41
Which electron arrangement corresponds to the element with atomic number 12?Atomic structureAtomic Structuremedium
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Question 42
Which of the following statements about salts is correct?Acids, bases, saltsAcids, Bases, and Saltsmedium
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Question 43
Which of the following subatomic particles has a positive charge?Atomic structureAtomic structureeasy
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Question 44
What type of bond is formed when two atoms share a pair of electrons?Chemical bondingChemical bondingeasy
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Question 45
Calculate the number of moles in 44 grams of carbon dioxide (CO₂). (Atomic masses: C=12, O=16)Mole conceptMole conceptmedium
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Question 46
In an electrochemical cell, electrons flow from the anode to the cathode because:ElectrochemistryElectrochemistrymedium
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Question 47
At equilibrium in a reversible reaction:Rates and equilibriumRates and equilibriumhard
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Question 48
Which salt is formed when hydrochloric acid reacts with sodium hydroxide?Acids, bases, saltsAcids, bases, saltseasy
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Question 49
What is the number of protons in the nucleus of an atom of carbon-12?Atomic structureAtomic Structureeasy
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Question 50
Calculate the number of moles in 44g of carbon dioxide (CO2). (Atomic masses: C=12, O=16)Mole conceptMole Concepteasy
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