Stoichiometry#Isotopes#Stable Isotopes776Choose the best answerWhich of the listed elements are monoisotopic? 1. Arsenic 2. Fluorine 3. Gold 4. IodineA1 and 2 onlyB2 and 3 onlyC1, 2 and 3 onlyD1, 2, 3 and 4 Like 0 Discuss 0Share
StoichiometryMole–Mass Conversion777Choose the best answerWhat is the mass of 5 mol H₂O?A90 gB36 gC18 gD100 g Like 0 Discuss 0Share
StoichiometryMolar Volume at STP778Choose the best answerWhat volume is occupied by 0.5 mol of an ideal gas at STP (273 K and 1 atm)?A22400 cm³B11200 cm³C22.4 mLDNone of these Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Chemical Bonding#Molecular Geometry779Choose the best answerMolecules having one lone pair and three bond pairs have geometrical shape:ABent or angularBTrigonalCTrigonal pyramidalDTrigonal planar Like 1 Discuss 0Share
Chemical KineticsEffect of Concentration on Reaction Rate780Choose the best answerThe _____ the concentration of reactants, the _____ the probability of collisions and hence the _____ the reaction rate.ALower, greater, greaterBHigher, greater, higherCHigher, lower, higherDLower, lower, higher Like 0 Discuss 0Share