StoichiometryMole Concept and Number of Molecules111Choose the best answerWhich 100 g sample contains the maximum number of molecules?AO₂BCH₄CCO₂DCl₂ Like 0 Discuss 0Share
Stoichiometry#Atomic Mass Unit112Choose the best answerOne unified atomic mass unit (1 u) is approximately equal to:A1.66 × 10⁻²⁴ gBapproximately 1.66 × 10⁻²⁷ gCapproximately the mass of one protonDA and C Like 0 Discuss 0Share
StoichiometryGas Density at STP113Choose the best answerWhat is the mass of 1 dm³ CO₂ at STP (273 K and 1 atm)?A2.4 gB4.2 gC6.45 gD1.96 g Like 0 Discuss 0Share
StoichiometryGram-Atom and Mole Concept114Choose the best answerWhat mass is present in one gram-atom of Na?A13 gB23 gC1 gD1/23 g Like 0 Discuss 0Share
StoichiometryLimiting Reagent115Choose the best answerEach sandwich requires 2 slices of bread and 1 shami. If 20 bread slices and 8 shamies are available, how many bread slices remain after making the maximum number of sandwiches?A2B4C6D8 Like 0 Discuss 0Share