StoichiometryMass–Mole Conversion26Choose the best answerHow many moles are present in 0.10 kg Ca?A0.0025 molB0.25 molC0.025 molD2.5 mol Like 0 Discuss 0Share
StoichiometryVapour Density and Molar Mass27Choose the best answerTwo moles of a gas X have a mass of 44 g. Its vapour density relative to H₂ is:A44B22C11D5.5 Like 0 Discuss 0Share
StoichiometryMass of an Element in a Compound28Choose the best answerHow many moles of NO₂ contain 16 g oxygen?A0.25 molB1.00 molC0.50 molD1.50 mol Like 0 Discuss 0Share
StoichiometryMass–Mole Conversion29Choose the best answerHow many moles of CO₂ are present in 220 mg CO₂?A5.0 × 10⁻³ molB5.0 × 10⁻² molC0.50 molD5.0 mol Like 0 Discuss 0Share
StoichiometryMass of an Element in a Compound30Choose 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