StoichiometryMole–Mass Stoichiometry1141Choose the best answerIf 2.25 mol O₂ reacts completely with Al, what mass of Al is consumed? 4Al + 3O₂ → 2Al₂O₃A81 gB54 gC49.5 gD27 g Like 0 Discuss 0Share
SolidsGeneral Properties of Solids1142Choose the best answerSolids are nearly incompressible because:ATheir particles have very high kinetic energyBTheir particles are closely packed with very little empty spaceCTheir particles are far apartDThey have very low density Like 0 Discuss 0Share
Chemical EquilibriumCommon-Ion Effect1143Choose the best answerPassing HCl gas through a saturated solution of NaCl causes the solubility of NaCl to:AIncreaseBDecreaseCRemain unchangedDBecome zero Like 0 Discuss 0Share
GasesElastic Collisions1144Choose the best answerCollisions between ideal-gas molecules are considered:AInelastic with loss of kinetic energyBElastic with no net loss of kinetic energyCPartially elasticDCompletely attractive Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules1145Choose the best answerHow does a competitive inhibitor reduce enzyme activity?ACompeting with the substrate for the active siteBPermanently destroying the enzymeCIncreasing substrate concentrationDConverting the enzyme into a coenzyme Like 0 Discuss 0Share