BasicsStoichiometry #Mole Concept16Choose the best answerHow many moles of phosphorus atoms are present in 0.25 mol of P₄?A0.25 molB0.50 molC1.00 molD4.00 mol Like 0 Discuss 0Share
BasicsStoichiometry #Mole Concept17Choose the best answerA sample contains 1.204 × 10²⁴ CO₂ molecules. How many moles of CO₂ are present?A0.5 molB1.0 molC2.0 molD4.0 mol Like 0 Discuss 0Share
StoichiometryMolar Volume and Number of Moles18Choose the best answerWhich sample contains the greatest number of moles?A11.2 dm³ H₂ at STPB44.8 dm³ N₂ at STPC67.2 dm³ CO₂ at STPD22.4 dm³ O₂ at STP Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms19Choose the best answer0.5 mol H₂O contains how many moles of H atoms and O atoms, respectively?A1.0 mol H atoms and 0.5 mol O atomsB0.5 mol H atoms and 1.0 mol O atomsC1.0 mol H atoms and 1.0 mol O atomsD0.5 mol H atoms and 0.5 mol O atoms Like 0 Discuss 0Share
StoichiometryGas Volume and Number of Moles20Choose the best answerWhich sample contains the minimum number of moles at STP (273 K and 1 atm)?A1 dm³ CH₄B5 dm³ HeC10 dm³ H₂D22.4 dm³ Cl₂ Like 0 Discuss 0Share