QUIZ PROBLEM #4 Instructions: Choose the ONE best answer to the question. There is no need to write anything on your “work” pages.   Question: Some HNO2 is added to a beaker of water and it dissolves.  This compound is a weak electrolyte. Which one of the following diagrams best represents this mixture at the atomic level?  Note:  “W” represents a water molecule.

QUIZ PROBLEM #5 Instructions: On your “work” page, write molecular, total ionic, and net ionic equations for the aqueous reaction between these two compounds: NaCN  and  Al(ClO3)3 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 #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?