Stoichiometry#Relative Atomic Mass281Choose the best answerAn atom is 15 times heavier than 1/12 of the mass of a carbon-12 atom. What is its relative atomic mass?A12B15C20D30 Like 0 Discuss 0Share
StoichiometryMole–Mole Stoichiometry282Choose the best answerOne mole of each substance is separately burnt completely in excess O₂. Which produces the greatest amount of CO₂?ACOBCCCH₄DC₂H₂ Like 0 Discuss 0Share
StoichiometryLimiting Reagent283Choose the best answer28 g N₂ reacts with 6 g H₂: N₂ + 3H₂ → 2NH₃ Which is the limiting reagent?AN₂BH₂CNH₃DNeither reactant Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes284Choose the best answerHow is the relative atomic mass of an element with several isotopes calculated?AThe mass of the lightest isotope onlyBA weighted average based on isotopic abundanceCThe mass number of the most abundant isotope onlyDThe total number of neutrons Like 0 Discuss 0Share