Stoichiometry#Atomic Mass Unit101Choose the best answer1/N_A gram is numerically equal to:AOne mole of an atomBOne atomic mass unit (1 u)CThe mass of one carbon-12 atomDAvogadro's number Like 0 Discuss 0Share
StoichiometryPercentage Composition and Molecular Mass102Choose the best answerA compound contains two carbon atoms per molecule and is 40% carbon by mass. Its molecular mass may be:A40 uB60 uC80 uD90 u Like 0 Discuss 0Share
Stoichiometry#Atomic Mass Unit103Choose the best answerAtomic mass is commonly expressed in:AgBKgCamuDmol Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms104Choose the best answerWhich 10 g sample contains the greatest total number of atoms?ANH₃BO₂CC₂H₆DCO₂ Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules105Choose 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