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Chem Catalyst:

Chem Catalyst:. Please have a calculator next to you. 4NH 3 (g) + 5O 2 (g)  4NO (g) + 6H 2 0 (g) If you have 10 moles of NH 3 , and excess oxygen, how many grams of NO are produced in the reaction?. Homework: Finish and Study from Stoich Review WS. Table of Contents:

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Chem Catalyst:

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  1. Chem Catalyst: Please have a calculator next to you. 4NH3 (g) + 5O2 (g)  4NO (g) + 6H20 (g) If you have 10 moles of NH3, and excess oxygen, how many grams of NO are produced in the reaction? Homework: Finish and Study from Stoich Review WS • Table of Contents: • 79 – Kickstarting my Project • 80 – Stoich Review WS • 81- Notes: Solutions and Molarity • 82- Flowchart Aluminum Lab • 83- Stoich Review WS #2

  2. Agenda • Catalyst (10 minutes) • Community Circle (30 minutes) • Kickstarting my Project (50 min) • Balance and solve (30 minutes) • Try, go over as a class, try, go over as a class. Aluminum Chloride Limited Reagent Lab Monday and Tuesday of next week.

  3. Community Circle Norms • You may only speak twice. • You must respect your peers • Only the person holding the Bruin may speak. • Be honest. Nobody will be mad at you. • Be open to everyone else’s opinions.

  4. 5 more weeks till the semester ends. • I feel like Chemistry is … • I feel like I’m not doing well because…. • I feel like I’m doing well because… • A Grizzly victory last week was… • I feel like…. • My peers… • My teachers…. • My parents…. GO Beyond, my classes are getting harder, or chemistry is hard.

  5. Kick-starting my Project Class Expectations • Conversation level: Low • Help: Approach teacher • Activity: Looking through notes, and brainstorming on the handout. • Movement: None • Participation: Finish handout within 60 minutes.

  6. Chem Catalyst: Please have a calculator next to you. 4NH3 (g) + 5O2 (g)  4NO (g) + 6H20 (g) If you have 5 grams of NH3, and excess oxygen, how many molecules of water are produced in the reaction? Homework: Finish and Study from Stoich Review WS #1 for a QUIZ the next time I see you. • Table of Contents: • 79 – Kickstarting my Project • 80 – Stoich Review WS • 81- Notes: Solutions and Molarity • 82- Flowchart Aluminum Lab • 83- Stoich Review WS #2

  7. Chemistry Agenda • Catalyst (10 minutes) • Notes: Solutions and Molarity (40 minutes) • Aluminum Chloride Lab Flow Chart (35 min) • Finish and Review Stoich Review WS #1 (20 min) • Exit Slip (15 min) • Homework: Study for Quiz on Monday

  8. Honors Agenda • Catalyst (10 minutes) • Notes: Solutions and Molarity (40 minutes) • Aluminum Chloride Lab Flow Chart (25 min) • Finish Limited Reagents Notes (15 min) • Start Limited Reagents Stoich WS (15 min) • Exit Slip (15 minutes) • Homework: Finish Stoich Review WS and study for quiz on Tuesday

  9. Which tastes the strongest?

  10. Justify • Why did the cup you picked taste the strongest? What was different about it from the other cups?

  11. Today’s Learning Objectives • I can identify the solute and solvent in a given solution. • I can calculate the molarity and percent composition of a solution • I can use molarity to determine the number of grams of a compound found in solution.

  12. How do we describe solutions?

  13. Solute and Solvent • The solvent is the substance that dissolves and is the primary ingredient in a solution. • The solute is the substance that is being dissolved in the solvent. • Solution has both a solvent and a solute • Ex: Salt (Solute) + Water (Solvent) -> Salt Water (Solution)

  14. Classify as a solute, solventorsolution 1. Water ________, Sugar _________, Lemon juice ________, Lemonade___________. 2. Water _________, Koolaide _________, koolaide powder ___________. 3. 20g Potassium chlorate powder _____________, 20 mL ethanol (alcohol)_______, homogenous mixture of powder and ethanol_____

  15. How do we calculate molarity?

  16. Concentration • The concentration of a solution is the amount of a particular substance in a solution.

  17. Molarity • Molarity is a concentration unit. This concentration of a solution is defined by moles of solute dissolved per liter of solution.

  18. Class Example • I have 72 g of HCl that I dissolved in 4 L of solution. What is the molarity of this final solution?

  19. Class Example • I have 72 g of HCl that I dissolved in 4 L of solution. What is the molarity of this final solution?

  20. Partner Talk • In order to torture this gummy bear you need you make a solution of KClO3 you dissolve 1,220 g of KClO3 in 1 L of water. What is the molarity of your final solution?

  21. Teacher Talks • In order to torture this gummy bear you need you make a solution of KClO3 you dissolve 1,220 g of KClO3 in 1 L of water. What is the molarity of your final solution?

  22. White Board Races

  23. Question 1 • You have a solution that is sugar dissolved in water. What is the solute in this solution?

  24. Question 2 • You have a solution of naphthalene dissolved in methanol. What is the solvent?

  25. Question 3 • You have 82 g of NaOH and you dissolve it in 4 L. What is the molarity of the solution?

  26. Question 4 • You have 52 g of H2SO4 dissolved in 0.5 L. What is the molarity of the solution?

  27. Question 5 • You have 52 g of CaCl2 dissolved in 0.1 L. What is the molarity of the solution?

  28. How do we determine grams from molarity?

  29. Hold Up! We Can Work in Reverse • We can work backwards if we have a molarity and volume of solution. • From this we can determine both the moles and mass of our solute

  30. Class Example • If you have a 3 L of a 0.6 M solution of AgNO3, then what mass of AgNO3 is contained in this solution?

  31. Class Example • If you have a 3 L of a 0.6 M solution of AgNO3, then what mass of AgNO3 is contained in this solution?

  32. Table Talk • If all the water in 4L of a 0.45 M NaCl solution evaporates, what mass of NaCl remains?

  33. Table Talk • If all the water in 4L of a 0.45 M NaCl solution evaporates, what mass of NaCl remains?

  34. How do we calculate percent composition?

  35. Percent Composition • Percent composition conveys the concentration in terms of percent of solute in a solution.

  36. Class Example • A 4 g sugar cube (Sucrose: C12H22O11) is dissolved in a 350 g of water. What is the percent composition by mass of the sugar solution that is created?

  37. Table Talk • You have 5 moles of NaCl and you dissolve this in 500 g of water, what is the concentration of this solution in terms of percent composition?

  38. Connect 4 • With a partner you will be using the connect 4 sheet to practice problems. • Silently read through the directions on the sheet in front of you

  39. Table Talk • If you react 4 moles of MnO2, how many particles of MnO2 did you use in this reaction?

  40. Table Talk • If you react 25 g of MnO2. How many particles of MnO2 did you use in this reaction?

  41. Table Talk • If you react 24 x 1023 particles of MnO2. How many moles of MnO2 did you use in this reaction?

  42. Question 5 • You have 52 g of CaCl2 dissolved in 0.1 L. What is the molarity of the solution?

  43. Closing Time

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