LiquidsEnthalpy of Vaporization2306Choose the best answerThe enthalpy of vaporization of water at approximately 298 K is closest to:A79 kJ mol⁻¹B44 kJ mol⁻¹C28 kJ mol⁻¹D10 kJ mol⁻¹ Like 0 Discuss 0Share
Atomic StructureBeta Particles2307Choose the best answerThe electron is identical to which type of particle emitted in β⁻-decay?Aα-particleBβ⁻-particleCH⁺ ionDPositron Like 0 Discuss 0Share
LiquidsBoiling Point2308Choose the best answerWhy does water have a much higher boiling point than hydrogen sulfide (H₂S)?AWater has a higher molar massBH₂S forms stronger covalent bondsCWater is less polarDWater molecules form strong hydrogen bonds Like 2 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept2309Choose the best answerWhat is the molar mass of methane, CH₄?A1 g mol⁻¹B32 g mol⁻¹C16 g mol⁻¹D50 g mol⁻¹ Like 0 Discuss 0Share
Atomic StructureQuantum Numbers2310Choose the best answerIf an electron has mℓ = −3, the minimum possible principal quantum number is:A1B2C3D4 Like 0 Discuss 0Share