StoichiometryMole Concept and Number of Atoms106Choose the best answerHow many atoms are present in 0.1 mol of a triatomic gas? NA = 6.02 × 10²³ mol⁻¹A6.026 × 10²²B1.806 × 10²³C3.600 × 10²³D1.800 × 10²² Like 0 Discuss 0Share
StoichiometryMole#Mole Concept107Choose the best answerWhen atomic mass, molecular mass, or formula mass is expressed in grams, it represents:AMolar volumeBAvogadro's numberCMoleDA, B and C Like 0 Discuss 0Share
KMU MDCAT 2024 Chemistry#Mole Concept#Stoichiometry108Choose the best answerHow many grams of CO₂ can be produced by thermally decomposing 10 moles of ZnCO₃(s)? (KMU MDCAT 2024)A320B360C400D440 Like 0 Discuss 0Share
StoichiometryAvogadro Constant and Molar Mass109Choose the best answerOne Avogadro number, NA, of helium atoms has a mass of approximately:A1 gB4 gC8 gD16 g Like 0 Discuss 0Share
StoichiometryGas Volume Stoichiometry110Choose the best answerIn the reaction: N₂ + 3H₂ → 2NH₃ 6 L NH₃ is produced with no reactant left unused. What initial volumes of N₂ and H₂ were used at the same temperature and pressure?A3 L N₂ and 3 L H₂B1 L N₂ and 3 L H₂C2 L N₂ and 3 L H₂D3 L N₂ and 9 L H₂ Like 0 Discuss 0Share