StoichiometryGas Volume Stoichiometry146Choose the best answerWhat volume of O₂ is required for complete oxidation of 4 L CO at the same temperature and pressure? 2CO + O₂ → 2CO₂A4 LB8 LC2 LD1 L Like 0 Discuss 0Share
Stoichiometry 11#Atomic Mass147Choose the best answerIf the atomic mass of element X is 8 u, which statement is correct?AOne atom of X has mass 8 g.BOne atom of X is 8 times heavier than 1 amu.COne mole of X has mass 8 amuDThe mass of one atom of X is 8 kg. Like 0 Discuss 0Share
Stoichiometry 11#Atomic Mass148Choose the best answerIf the molecular mass of X₂ is 50 u, what is the atomic mass of X?A100 uB25 uC50 uD12.5 u Like 0 Discuss 0Share
Stoichiometry 11#Mole Concept149Choose the best answerWhich sequence correctly represents atom → molecule → compound?AHe → O₂ → OBNa → H₂ → H₂OCO → O₂ → ODH → H₂O → H₂ Like 0 Discuss 0Share
StoichiometryPercentage Yield150Choose the best answerIf actual yield is 15 g and theoretical yield is 20 g, the percentage yield is:A50%B75%C80%D90% Like 0 Discuss 0Share