StoichiometryMass–Mass Stoichiometry6Choose the best answerWhat mass of CaCO₃ is required to produce 2.8 g CaO? CaCO₃ → CaO + CO₂A2.5 gB5.0 gC10 gD50 g Like 0 Discuss 0Share
StoichiometryGram-Atom and Mole Concept7Choose the best answerWhat mass is present in one gram-atom of Na?A13 gB23 gC1 gD1/23 g Like 0 Discuss 0Share
StoichiometryMole Concept and Mass Comparison8Choose the best answerWhich sample has the greatest mass?A1 gram-atom of CB0.5 mol CH₄C10 mL H₂OD3.011 × 10²³ O atoms Like 0 Discuss 0Share
StoichiometryMass–Mole Stoichiometry9Choose the best answerAn 8 g sample of CH₄ burns completely: CH₄ + 2O₂ → CO₂ + 2H₂O How many moles of H₂O are produced?A0.5 molB0.25 molC1.0 molD2.0 mol Like 0 Discuss 0Share
StoichiometryMass of an Element in a Compound10Choose 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