StoichiometryAtomic Mass Unit and Relative Atomic Mass76Choose 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 Stoichiometry77Choose 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 Reagent78Choose 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
Sindh MDCAT 2020 Chemistry#Empirical and Molecular Formula#Stoichiometry79Choose the best answerThe type of isomerism existing in a compound of molecular formula C₂H₆O is: (Sindh MDCAT 2020)AFunctional group isomerismBPosition isomerismCChain isomerismDMetamerism Like 0 Discuss 0Share
StoichiometryAvogadro's Law and Gas Volume80Choose the best answerA stoichiometric mass–volume calculation for gases mainly connects moles with gas volume through:ALaw of definite compositionBGay-Lussac's law onlyCAvogadro's lawDLaw of multiple proportions Like 0 Discuss 0Share