StoichiometryMass of an Element in a Compound161Choose the best answerHow many moles of CO₂ contain 8.0 g oxygen?A0.25 molB1.00 molC0.50 molD1.50 mol Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms162Choose the best answerEqual masses of N₂, H₂ and O₂ are present in a vessel. Which sample contains the least number of atoms?AH₂BN₂CO₂DBoth H₂ and N₂ Like 0 Discuss 0Share
StoichiometryFactors Affecting Percentage Yield163Choose the best answerWhich factor does NOT affect the percentage yield of a reaction?ALoss of product during purificationBSide reactions producing unwanted productsCMeasurement errorsDColour of the product Like 0 Discuss 0Share
StoichiometryMass–Mass Stoichiometry164Choose the best answer27 g of Al reacts with how much O₂ to produce Al₂O₃? 4Al + 3O₂ → 2Al₂O₃A8 gB16 gC32 gD24 g Like 0 Discuss 0Share
StoichiometryMole#Mole Concept165Choose the best answerWhat is the mass of one gram-molecule of water?A18B18 amuC18 gD18 kg Like 0 Discuss 0Share