StoichiometryMole#Mole Concept236Choose the best answerOne mole of carbon has a mass of 12 g, while one mole of magnesium has a mass of 24 g. One Mg atom is:AHalf as heavy as one C atomBEqual in mass to one C atomCTwice as heavy as one C atomDFour times as heavy as one C atom Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Mass Unit237Choose the best answerIf an atom has a mass of 4 u, what does this mean?AIts mass is 4 g.BIt has 4 neutrons.CIts mass is four times the mass of 1 amu.DIt must be hydrogen. Like 0 Discuss 0Share
Stoichiometry#Relative Atomic Mass238Choose the best answerAn atom has an atomic mass of 35.5 u. What is its relative atomic mass?A35.5 amuB35.5 gC35.5DNone of these Like 0 Discuss 0Share
StoichiometryMole–Mass Stoichiometry239Choose the best answerWhat mass of MgO is produced when 0.5 mol Mg burns in excess O₂? 2Mg + O₂ → 2MgOA40 gB30 gC10 gD20 g Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms240Choose the best answerApproximately how many carbon atoms are present in 1 mol sucrose, C₁₂H₂₂O₁₁?A6 × 10²³B24 × 10²³C60 × 10²³D72 × 10²³ Like 0 Discuss 0Share