Stoichiometry#Relative Atomic Mass266Choose the best answerWhich of the following quantities has no unit?AAtomic massBFormula massCRelative atomic massDMolecular mass Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Percentage Yield#Stoichiometry267Choose the best answerWhat is the percentage yield when actual yield is 2 g and theoretical yield is 4 g? (IBA MDCAT 2025)A25%B50%C75%D85% Like 1 Discuss 0Share
StoichiometryBalancing Chemical Equations268Choose the best answerWhich set of coefficients correctly balances: K₂CrO₄ + HCl → K₂Cr₂O₇ + KCl + H₂OA1, 1, 2, 2, 1B2, 2, 1, 1, 1C2, 1, 1, 2, 1D2, 2, 1, 2, 1 Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Formula Mass269Choose the best answerWhy is the term molecular mass not used for NaCl?ANaCl has a very large mass.BNaCl exists only in the solid state.CNaCl does not exist as discrete molecules; it exists as a lattice of ions.DSodium is a metal. Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules270Choose the best answerWhich sample contains the greatest number of H₂O molecules?A18 mL liquid waterB0.18 g waterC0.00224 L water vapour at 273 K and 1 atmD4 × 10⁻³ mol water Like 0 Discuss 0Share