StoichiometryMass of an Element in a Compound586Choose the best answerHow many moles of NO₂ contain 16 g oxygen?A0.25 molB1.00 molC0.50 molD1.50 mol Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Number587Choose the best answerIf Avogadro’s number changed from 6.022 × 10²³ mol⁻¹ to 6.022 × 10²⁰ mol⁻¹, which quantity would change?AThe definition of mass in units of grams.BThe mass of one mole of carbon.CThe ratio of chemical species in a balanced equation.DThe ratio of elements in a compound. Like 0 Discuss 0Share
Aldehydes and KetonesFehling's Test588Choose the best answerFehling's solution gives a brick-red precipitate with: (a) Aromatic aldehydes (b) Aliphatic aldehydes (c) Ordinary ketones (d) Terminal α-hydroxy ketonesA(b) and (d)B(a) and (b)C(a) and (d)D(b) and (c) Like 0 Discuss 0Share
Atomic StructureQuantum Numbers589Choose the best answerFor the ground-state electron of hydrogen with mₛ = +½, the sum n + ℓ + mℓ + mₛ is:A3/2B3C2D2/3 Like 0 Discuss 0Share
Industrial ChemistryDegree of Polymerization590Choose the best answerA polymer has a degree of polymerization, DP, of 1000. This means that:AIt contains 1000 different monomer types.BIts polymer chain contains approximately 1000 repeating monomer units.CIts molar mass is exactly 1000 g mol⁻¹.DIt contains exactly 1000 branches. Like 0 Discuss 0Share