What is the molarity of the phosphoric acid if the student used 47.25 mL of a 0.1645 M standard solution of NaOH to titrate 20.00 mL of acid to the endpoint? To receive full credit (2 pts for answers and 2 pts for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL Hint: write the balanced equation and use the mole ratio in calculations.

Write and balance the molecular equation for the complete neutralization of H3PO4 by Ca(OH)2 What is the molar ratio of acid to base (stoichiometric factor)? To receive full credit (2 pts for answers and 2 pts for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL

Calculate the mass percent of Cu(NO3)2 (MM=187.56 g/mol) in a 0.450 M solution. d=1.110g/mL To receive full credit (2 pts for answers and 1 pt for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL

  Apply the Hess’s Law and use the Data table below to calculate the ΔH°rxn, in kJ, for: Sr(OH)2(s) + 2HNO3aq) => Sr(NO3)2(aq) + 2H2O(l) To receive full credit (3 pts for MC and 1 pt for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL Substance  ΔHf° (kJ mol–1) Sr(OH)2(aq) -1007 HNO3(aq) -207 Sr(NO3)2(aq) -962 H2O (l) -286  

Calculate the number of moles of AgNO3 (MM=169.87 g/mol) in 250.0mL of 0.200 M solution To receive full credit (3 pts for answers and 1 pt for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL

What is the molecular shape of CO2?    Build the Lewis dot structure of the molecule  CO2 and answer the following questions: 1. What is the general electron domain formula for this molecule  (AXmEn)? [Formula] 2. What is the electron domain geometry of the molecule? (Hint: electron geometry is not always the same as the molecular shape).[Elec] 3. What is the electron shape of the molecule?[Molec] Save and upload your Lewis dot structures to the “Calculations and Partial Credit on Midterm Exam” assignment to earn one (2) more points after you submit this exam. Be sure to number your answers and use the correct units.  

Build the Lewis dot structure of the molecule  IF5 and answer the following questions: 1. What is the electron domain geometry of the molecule? (Hint: electron geometry is not always the same as the molecular shape).[Elec] 2. What is the  shape of the molecule?[Molec] Save and upload your Lewis dot structures to the “Calculations and Partial Credit on Midterm Exam” assignment to earn one (2) more points after you submit this exam. Be sure to number your answers and use the correct units.

Which of the following explains why different metals produce different colors during the flame test?

Build the Lewis dot structure of the molecule  KrF2 and answer the following questions: What is the  shape of the molecule? Is it polar? Save and upload your Lewis dot structures to the “Calculations and Partial Credit on Midterm Exam” assignment to earn one (1) more point after you submit this exam. Be sure to number your answers and use the correct units.  

Build the Lewis dot structure of the molecule and answer the following question: How many sigma bonds, pi bonds and nonbonding domains, respectively, can be associated with Cl in the molecule of HClO3? Save and upload your Lewis dot structures to the “Calculations and Partial Credit on Midterm Exam” assignment to earn one (1) more point after you submit this exam. Be sure to number your answers and use the correct units.