Use the following information to determine the enthalpy for the reaction shown below. → S(s) + O2(g) SO2(9) ΔΗ Π ? Reference reactions: S(s) + O2(g) SO3(9) 2SO2(g) + O2(g) → 2SO3(g) AHxn = -395kJ AHrxn = ― -198kJ

Q1. (a) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH3. Use curved arrows to show the electron movement. (b) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH4*. Use curved arrows to show the electron movement.

Indicate which of the following is not an element in its standard state at 25oC and 1 atm. Group of answer choices O2(g) H2(g) Ne(g) N(g) C(s, graphite)

6. Show how you would accomplish the following transformations. (Show the steps and reagents/solvents needed) 2-methylpropene →2,2-dimethyloxiran I

4) Answer the following exercise with curved arrows indicating who is a nucleophile or Who is the electrophile? 2.44 Predict the structure of the product formed in the reaction of the organic base pyridine with the organic acid acetic acid, and use curved arrows to indicate the direction of electron flow. 7 H3C OH N Pyridine Acetic acid

Using the data provided please help me answer this question.  Determine the concentration of the iron(Ill) salicylate in the unknown directly from to graph and from the best fit trend-line (least squares analysis) of the graph that yielded a straight line.

Please help me figure out what the slope is and how to calculate the half life Using the data provided.

Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the structure of the missing reactants, intermediates, or products in the following mechanism. Include all lone pairs. Ignore stereochemistry. Ignore inorganic byproducts. H Br2 (1 equiv) H- Select to Draw Starting Alkene Draw Major Product I I H2O 四: ⑦.. Q Draw Major Charged Intermediate I

NH (aq)+CNO (aq) → CO(NH2)2(s) Experiment [NH4] (M) [CNO] (M) Initial rate (M/s) 1 0.014 0.02 0.002 23 0.028 0.02 0.008 0.014 0.01 0.001 Calculate the rate contant for this reaction using the data provided in the table.