Chemical KineticsConcentration-Time Curve and Reaction Rate321Choose the best answerDuring a reaction, the concentration–time curve initially changes rapidly but becomes nearly horizontal after a long time. In this nearly horizontal region, the concentration changes very little with time. What does this indicate?AReaction rate is maximumBReaction rate is rapidly increasingCReaction rate is approximately zeroDConcentration is changing rapidly Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Extensive Properties#Thermochemistry & Thermodynamics322Choose the best answerWhich of the following is an extensive state function?ATemperatureBReflective indexCViscosityDVolume Like 0 Discuss 0Share
GasesCharles's Law Graph and Absolute Zero323Choose the best answerA Charles's law V-versus-°C graph, when extrapolated backwards, intersects the temperature axis at approximately:A0°CB−273.15°CC100°CD+273°C Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Chemical Bonding#Dipole Moment324Choose the best answerQ.76 The dipolar moment of CO₂ is zero because it is:AAngularBLinearCTriatomicDPyramidal Like 0 Discuss 0Share
StoichiometryMass of an Element in a Compound325Choose the best answerHow many moles of CO₂ contain 8.0 g oxygen?A0.25 molB1.00 molC0.50 molD1.50 mol Like 0 Discuss 0Share