1. Mole Jeopardy Moles and Grams Avagadro!Percent Composition Empirical Formula Molecular Formula 10 20 30 40 50

2. When you see “g” in a conversion factor, you should do what? Category 1 – 10 points

3. The molar mass is the mass of 1 ______ of atoms. Category 1 – 20 points

4. What tool do we need to use to find molar mass? Category 1 – 30 points

5. What is the mass of 3.5 moles of NaOH? Category 1 – 40 points

6. How many moles of NaCl are in 34.2 g of NaCl? Category 1 – 50 points

7. A mole of substance contains how many particles? Category 2 – 10 points

8. When writing conversion factors, what number always pairs with mol? Category 2 – 20 points

9. Just as 12 eggs = a dozen, __________ representative particles = a mole Category 2 – 30 points

10. How many moles of magnesium is 1.25 X 10 23 atoms of magnesium? ? Category 2 – 40 points

11. Convert 32.1 g CH 4 to molecules. Category 2 – 50 points

12. To calculate % composition, we use what equation? mass of _________ % Composition = ------------------------ mass of _________ Category 3 – 10 points

13. What is the first thing you have to do when given a % composition problem? Category 3 – 20 points

14. Find the % composition of C 3 H 8. Category 3 – 30 points

15. What is the percent of nitrogen in NH 3 ? Category 3 – 40 points

16. What is the percent of sodium in NaCl? Category 3 – 50 points

17. An empirical formula gives the lowest ______ - ______ ratio of elements in a compound. Category 4 – 10 points

18. In empirical formula problems, you will be given masses of elements. The first thing you should do is what? Category 4 – 20 points

19. The 2 nd step in an empirical problem is to do what? Category 4 – 30 points

20. Find the empirical formula. A compound contains 9.31g of Ag and 0.69g of O. Category 4 – 40 points

21. A compound contains 25.9% N and 74.1% O. Find the empirical formula. Category 4 – 50 points

22. Can a molecular formula and an empirical formula be the same? Category 5 – 10 points

23. TRUE OR FALSE Several compounds can have the same empirical formula, but different molecular formulas. Category 5 – 20 points

24. TRUE OR FALSE The empirical formula could be triple the molecular formula. Category 5 – 30 points

25. Find the molecular formula of… A compound with an empirical formula of C 2 H 8 N and a molar mass of 46 grams per mole. Category 5 – 40 points

26. Find the molecular formula of… A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole. Category 5 – 50 points