THE MOLECULAR AND EMPIRICAL FORMULA GAME Can you

Question 1 ■ A compound has an empirical formula of Cl. CH 2 and

Question 2 ■ A compound consists of 75. 0% magnesium and 25. 0% oxygen.

Question 3 ■ A compound has the following percent composition: 49. 48% carbon, 5.

Question 4 ■ C 4 H 5 ON 2 has a molar mass of

Question 5 ■ A compound is found to have 46. 67% nitrogen, 6. 70%

Question 6 ■ Find the empirical formula of a compound that contains 15. 8

Question 7 ■ Benzoic acid contains 68. 8% carbon, 4. 95% hydrogen, and 26.

Question 8 ■ Benzoic acid contains 68. 8% carbon, 4. 95% hydrogen, and 26.

Question 9 ■ A compound contains 50. 0% magnesium, 24. 0% carbon, 16. 0%

Question 10 ■ A compound contains 75. 46% carbon, 4. 43% hydrogen, and 20.

Question 12 ■ Freons are gaseous compounds used in refrigeration. A particular Freon contains

Question 12 ■ A compound with an empirical formula of CH is found to

Question 13 ■ A compound consists of 40. 0% calcium, 12. 0% carbon, and

Question 14 ■ The empirical formula for a hydrocarbon is CH 2. Its actual

Question 15 ■ A compound consists of 85. 0% silver and 15. 0% fluorine.

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THE MOLECULAR AND EMPIRICAL FORMULA GAME Can you find the molecular or empirical formula?

Question 1 ■ A compound has an empirical formula of Cl. CH 2 and its molar mass is 98. 96 g/mol. What is the molecular formula of this compound? – Cl 2 C 2 H 4

Question 2 ■ A compound consists of 75. 0% magnesium and 25. 0% oxygen. What is the empirical formula? – Mg 2 O

Question 3 ■ A compound has the following percent composition: 49. 48% carbon, 5. 19% hydrogen, 16. 48% oxygen, and 28. 85% nitrogen. What is the empirical formula? – C 4 H 5 ON 2

Question 4 ■ C 4 H 5 ON 2 has a molar mass of 194. 19 g/mol. What is its molecular formula – C 8 H 10 O 2 N 4

Question 5 ■ A compound is found to have 46. 67% nitrogen, 6. 70% hydrogen, 19. 98% carbon, and 26. 65% oxygen. What is its empirical formula? – N 2 H 4 CO

Question 6 ■ Find the empirical formula of a compound that contains 15. 8 g of Al, 28. 1 g of S, and 56. 1 g of oxygen. – Al 2 S 3 O 12 or Al 2(SO 4)3

Question 7 ■ Benzoic acid contains 68. 8% carbon, 4. 95% hydrogen, and 26. 25% oxygen. Find the empirical formula – C 7 H 6 O 2

Question 8 ■ Benzoic acid contains 68. 8% carbon, 4. 95% hydrogen, and 26. 25% oxygen. Find the empirical formula – C 7 H 6 O 2

Question 9 ■ A compound contains 50. 0% magnesium, 24. 0% carbon, 16. 0% oxygen, and 10. 0% hydrogen. What is the empirical formula? – Mg 2 C 2 OH 10

Question 10 ■ A compound contains 75. 46% carbon, 4. 43% hydrogen, and 20. 11% oxygen. It has a molar mass of 318. 31 g/mol. What is the empirical and molecular formula? – EF: C 10 H 7 O 2 – MF: C 20 H 14 O 4

Question 12 ■ Freons are gaseous compounds used in refrigeration. A particular Freon contains 9. 93% carbon, 58. 64% chlorine, and 31. 43% fluorine. What is the empirical formula – CCl 2 F 2

Question 12 ■ A compound with an empirical formula of CH is found to have a molar mass of 26. 04 g/mol. What is its molecular formula? – C 2 H 2

Question 13 ■ A compound consists of 40. 0% calcium, 12. 0% carbon, and 48. 0% oxygen. What is the empirical formula? – Ca. CO 3

Question 14 ■ The empirical formula for a hydrocarbon is CH 2. Its actual molar mass is 294 g/mol. What is its molecular formula? – C 21 H 42

Question 15 ■ A compound consists of 85. 0% silver and 15. 0% fluorine. What is the empirical formula? – Ag. F