StoichiometryMole Concept and Number of Atoms56Choose the best answerThe number of hydrogen atoms in 0.25 mol vitamin C, C₆H₈O₆, is:A8NAB6NAC4NAD2NA Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms57Choose the best answer0.25 mol CH₄ contains:A1 mol C atomsB4 mol H atomsC5 mol total atomsD1 mol H atoms Like 0 Discuss 0Share
StoichiometryAtomic Mass Unit and Relative Atomic Mass58Choose the best answerIf 1 u were defined as 1/6 instead of 1/12 of the mass of a ¹²C atom, numerical relative atomic masses would:ABecome halfBDoubleCRemain unchangedDBecome zero Like 0 Discuss 0Share
StoichiometryMass–Volume Stoichiometry59Choose the best answerHow many litres of H₂ at STP are produced when 6.0 g Mg reacts with excess HCl? Mg + 2HCl → MgCl₂ + H₂A22.4 LB11.2 LC5.6 LDNone of these Like 0 Discuss 0Share
StoichiometryLimiting Reagent60Choose the best answerWhat is a limiting reagent?AThe reactant consumed lastBA reactant that only forms the productCThe reactant present in excessDThe reactant consumed first Like 0 Discuss 0Share