Stoichiometry#Atomic Mass Unit126Choose the best answerAtomic mass is commonly expressed in:AgBKgCamuDmol Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms127Choose the best answerWhich 10 g sample contains the greatest total number of atoms?ANH₃BO₂CC₂H₆DCO₂ Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules128Choose the best answerWhich sample contains the maximum number of molecules?A11.2 L O₂ at STPB16 g CH₄C14 g N₂D44.8 L NH₃ at STP Like 0 Discuss 0Share
StoichiometryMole–Volume Stoichiometry129Choose the best answer0.25 mol N₂ reacts with excess H₂: N₂ + 3H₂ → 2NH₃ The volumes of H₂ consumed and NH₃ produced at STP (273 K and 1 atm) are respectively:A16.8 L and 11.2 LB33.6 L and 11.2 LC11.2 L and 2.8 LD22.4 L and 5.6 L Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Number130Choose the best answerIf Avogadro’s number changed from 6.022 × 10²³ mol⁻¹ to 6.022 × 10²⁰ mol⁻¹, which quantity would change?AThe definition of mass in units of grams.BThe mass of one mole of carbon.CThe ratio of chemical species in a balanced equation.DThe ratio of elements in a compound. Like 0 Discuss 0Share