QUIZ PROBLEM #8 Instructions:  Type your answer to the following question in the textbox below. Show all work on your “work” pages.  Label which problem it is (#8).   Question: Use the data provided here to calculate the enthalpy change for this reaction: 4 KO2 (s)  +  2 H2O (l)   –>   4 KOH (s)  +  3 O2 (g)    Standard Enthalpies of Formation (kJ/mol) H2O (g) -241.8   OH- (aq) -230.0 H2O (l) -285.8   KOH (s) -424.7 O2 (g) 0.0   K (s) 0.0 O3 (g) +142.7   KO2 (s) -284.9

What is the minimum grade you need to get on a quiz to get credit for it?

QUIZ PROBLEM #7 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#7).   Question: Use dimensional analysis to solve this problem. How many grams of H2O are produced by the reaction of 75.0 mL of 6.25 M H3PO4 solution with excess Pb(OH)4 in the reaction shown here? 3 Pb(OH)4 (s)  +  4 H3PO4 (aq)   –>   Pb3(PO4)4 (s)  +  12 H2O (l)   Molar Masses for All Substances: Pb(OH)4 = 275.2 g/mol   |   H3PO4 = 98.00 g/mol Pb3(PO4)4 = 1001.5 g/mol   |   H2O= 18.02 g/mol

The nurse is reviewing the results of a client’s recent hemoglobin A1c level drawn to evaluate type 1 diabetes management. Which result indicates that treatment has been successful?

A 40-year old client is surprised to learn of the diagnosis of type 1 diabetes mellitus. What is the nurse’s best response?

When must you have gotten the minimum percentage on a quiz to get credit for it?

QUIZ PROBLEM #5 Instructions: On your “work” page, write molecular, total ionic, and net ionic equations for the aqueous reaction between these two compounds: Fe(NO3)3  and  RbOH Label which problem it is (#5). Clearly label your final answers for all three equations, which should all be balanced. Type an X in the textbox here when you are finished so Canvas will mark the question as answered.

QUIZ PROBLEM #6 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#6). Question: Use only dimensional analysis to solve this problem. A solution contains ethanol, C2H5OH, and water.  The solution is 35.1% ethanol by mass. The density of ethanol is 0.789 g/mL.  What volume of ethanol is in 162 grams of this solution?

QUIZ PROBLEM #5 Instructions:  Type your answer to the question in the textbox below. Show all work on your “work” page.  Label which problem it is (#5). Question: What is the molarity of sodium sulfide in a solution prepared by dissolving 2.31 g of Na2S in enough water to make 64.5 L of solution?

QUIZ PROBLEM #1 Instructions:  Select your answers from the dropdown lists. There is no need to write anything on your “work” pages.  But if you do, include that with your scanned pages that you submit later. Questions: For each of the chemical equations shown, indicate: Whether or not the equation is balanced. Which type of reaction it is. Chemical Equations: A.  2 Fe(OH)2 (s)   –>   2 FeO (s)  +  H2O (l) Is this equation balanced?  [balance1] Which type of reaction is this?  [rxn1] B.  2 C4H6 (l)  +  11 O2 (g)   –>   8 CO2 (g)  +  6 H2O (g) Is this equation balanced?  [balance2] Which type of reaction is this?  [rxn2]