Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda

# Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda

Télécharger la présentation

## Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
##### Presentation Transcript

1. Tuesday, May 13th: “A” DayWednesday, May 14th: “B” DayAgenda • Chapter 7 Review Review • Chapter 7 Jeopardy Review Next time: • Concept Review due • Chapter 7 Test

2. Chapter 7 Review 2. What term is used to describe the mass in grams of 1 mol of a substance? Molar Mass

3. Chapter 7 Review • How many atoms of gold are there in a pure gold ring with a mass of 10.6 g? • 10.6 g Au X 1 mole Au = .0538 moles Au • 196.97 g Au • .0538 moles Au X 6.022 X 1023 atoms Au • 1 mole Au • 3.24 x 1022 atoms Au

4. Chapter 7 Review • Find the molar mass of the following compounds: • Potassium dichromate • K1+ Cr2O7 2- • K2Cr2O7 • K: 2(39.10) = 78.20 • + Cr: 2(52.00) = 104.00 • O: 7(16.00) = 112.0 • 294.20 g/mol

5. Chapter 7 Review • Find the molar mass of the following compounds: • Magnesium nitrate • Mg2+ NO31- • Mg(NO3)2 • Mg: 24.31 = 24.31 • + N: 2(14.01) = 28.02 • O: 6(16.00) = 96.00 • 148.33 g/mol

6. Chapter 7 Review • An oxide of phosphorus is 56.34% phosphorus, and the rest is oxygen. Calculate the empirical formula for this compound. • 56.34 g P X 1 mol P = 1.819 mol P = 1 mol P (2) • 30.97 g P 1.819 2 mol P • 43.66 g O X 1 mol O = 2.729 mol O = 1.5 mol O (2) • 16.00 g O 1.819 3 mol O • P2O3

7. Chapter 7 Review • The empirical formula of the anticancer drug altretamine is C3H6N2. The experimental molar mass is 210 g/mol. What is the molecular formula? • C: 3(12.01) = 36.03 210 = 3 • + H: 6(1.01) = 6.06 70.11 • N: 2(14.01) = 28.02 • 70.11 g/mol • 3(C3H6N2) = C9H18N6

8. Jeopardy Teams2A • Team #1: Megan, Chris, Emily, Taylor, Jordan • Team #2: Connor, Colleen, Ben, Desiree, Rachael • Team #3: Paityn, Zendra, Jake, Ashley, Tabitha • Team #4: Austin, Drew, Krits, Lauren, Allie • Team #5: Stephanie, Jackie, Lydia, Brooke, Mya

9. Jeopardy Teams4A • Team #1: Troy, Cody, Anna, Daleah • Team #2: Jordan, Rebecca, Abby • Team #3: Josh, Ashley, Sarah • Team #4: Morgan, Eric, Brook • Team #5: Tate, Mason, Korey

10. Jeopardy Teams1B • Team #1: Autumn, Ashley, Kyle, Morgon • Team #2: Christian, Allie, Hunter, Kelsey • Team #3: Alyssa, Andy, Rachel M., Krysta • Team #4: Phoenix, Emily, Mason, Whitney • Team #5: Rachel D., Sydney, Michael

11. Jeopardy Teams3B Team #1: Kellie, RJ, Tom, Allysa Team #2: Merik, Danika, Michelle, Holly Team #3: Kenzie, Justin, Adam, Kaitlyn Team #4: Hunter, Molly, Eryn, Noah Team #5: Shelby, Dylan, Alexandra

12. Chapter 7 “The Mole & Chemical Composition”

13. THE RULES: • There will be 5 teams • Mrs. Elfline’s decisions are final – that means no whining! • Each member of the winning team will receive \$1 mole money

14. And now…here is the host of Jeopardy… Mrs. Elfline

15. Let’s Get Ready to play… Today’s Categories are:

16. Definitions

17. This ‘n That

18. Calculations

19. Calculations

20. Rebus Puzzles

21. Definitions This ‘n That Calculations Calculations Rebus Puzzles \$100 \$100 \$100 \$100 \$100 FJ \$200 \$200 \$200 \$200 \$200 \$300 \$300 \$300 \$300 \$300 \$400 \$400 \$400 \$400 \$400 \$500 \$500 \$500 \$500 \$500

22. The unit for molar mass Answer…

23. 1. What elements are in a compound2. How many atoms of each element are in a compound 300

24. A formula that shows the simplest whole-number ratio of the atoms in a compound Answer…

26. Which has more atoms: 1 mole of gold or 1 mole of silver? Answer…

27. How many hydrogen atoms are there in 1 molecule of ammonium carbonate, (NH4)2CO3? Answer…

28. 8 200

29. To find the molecular formula from the empirical formula, you need to calculate… Answer…

30. As the atomic masses of the elements in the periodic table decreases, the number of atoms in one mole of the element… Answer…

31. If a compound has a molecular formula of X2Y4, what is it’s empirical formula? Answer…

32. XY2 500

33. .76 moles Au 200

34. A compounds empirical formula is BH3. If the experimental molar mass is 27.67 g/mole, what is the molecular formula? Answer…

35. B2H6 300