Assignments are due on Mondays, unless otherwise noted, at 11:59 p.m.

How many moles of NO2 form when 1.35 kg of N2O5 completely decomposes? Use 2 N2O5(g) →  4 NO2(g) + O2(g)

Correctly identify the covalent species below.  CH2Cl2  NaF CCl4 BaBr2 CuSO4 I II III IV V

(15 points) A 30.00-mL sample of an unknown HCl solution is titrated with a 0.300 M NaOH solution. The equivalence point is reached when 10.00 mL of NaOH solution is added. What is the concentration of the unknown HCl solution? The neutralization reaction is HCl (aq) + NaOH (aq) →  H2O (l) + NaCl (aq)

(30 points total) Consider the precipitation reaction of Lead(II) nitrate in aqueous solution with that of potassium iodide in solution producing solid Lead(II) iodide and aqueous potassium nitrate. a. (5 points) Write the balanced molecular equation for the reaction.   b. (5 points) Identify the spectator ions and write the net ionic equation.   c. (15 points) Starting with 1 L of 0.200 M Lead(II) nitrate and 1 L of 0.200 M of potassium iodide solution, what is the limiting reagent and theoretical yield (in grams) of Lead(II) iodide for the reaction?   d. (5 points) If we are able to isolate 10.00 g of Lead(II) iodide what is the percent yield for the reaction?

Determine the oxidation state of H in H2O.

Which relationship represents Graham’s Law of Effusion? 

Q3 – what confidence value should be used when computing the margin of error? (3 decimal places)

Q3 – what is the point estimate for the mean? (2 decimal places)

Q1 – what is the finite population correction factor? (4 decimal places)