StoichiometryMass of a Single Molecule141Choose the best answerThe mass of one sucrose molecule, C₁₂H₂₂O₁₁, is approximately:A5.7 × 10⁻²² gB1.6 × 10⁻²² gC1.4 × 10⁻²¹ gD5.7 × 10⁻²⁰ g Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Number142Choose the best answerOne mole of P₄ contains:A6.02 × 10²³ P atomsB6.02 × 10²³ P₄ moleculesC4 × 6.02 × 10²³ P₄ moleculesD4 moles of P₄ molecules Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Mole Concept#Stoichiometry143Choose the best answerWhich sample contains the greatest number of atoms?A4 g HeB46 g NaC0.40 g CaD12 g He Like 0 Discuss 0Share
Stoichiometry#Atomic Mass Unit144Choose the best answerWhich definition of the unified atomic mass unit (u) is correct?AThe mass of one protonBThe mass of one neutronCExactly 1/12 of the mass of a carbon-12 atomDThe average mass of naturally occurring carbon atoms Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Empirical and Molecular Formula#Stoichiometry145Choose the best answerOxidation numbers of X, Y, and Z are +6, −2, and −1 respectively. The possible molecular formula when these atoms combine is:AX₂YZBXY₂Z₂CXYZ₂DXY₂Z Like 0 Discuss 0Share