07:33Molecular Orbital Theory, Integrated Rate Laws, The Arrhenius Equation, Stoichiometry Word ProblemMelissa Maribel354views
Multiple ChoiceFor the reaction A → B, the rate constant is 0.0837 M–1•sec–1. How long would it take for [A] to decrease by 85%?720views7rank2comments
Multiple ChoiceThe following reaction has a rate constant of 3.7 × 10–3 M•s–1 at 25°C:A → B + CCalculate the concentration of C after 2.7 × 10–3 sec where [A]0 was 0.750 M at 25°C; assume [C]0 = 0 M.644views4comments
Multiple ChoiceFor the decomposition of urea, NH2CONH2 (aq) + H+(aq) + 2 H2O (l) → 2 NH4+ (aq) + HCO3– (aq), the rate constant is 3.24 × 10–4 s–1 at 35°C. The initial concentration of urea is 2.89 mol/L. What fraction of urea has decomposed after 3.5 minutes?1242views2rank
Multiple ChoiceIodine-123 is used to study thyroid gland function. As this radioactive isotope breaks down, after 5.7 hrs the concentration of iodine-123 is 56.3% complete. Find the rate constant of this reaction.910views1rank1comments
Open QuestionFor the reaction x ⟶ y identify what the graphs of [x] versus time and [y] versus time would look like for various orders. in each graph, [?] represents either [x] or [y].261views