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Chapter 8 Mole Conversions Part 1. How many moles are in 12.3 g of uranium?

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Presentation on theme: "Chapter 8 Mole Conversions Part 1. How many moles are in 12.3 g of uranium?"— Presentation transcript:

1 Chapter 8 Mole Conversions Part 1

2 How many moles are in 12.3 g of uranium?

3 12.3 g mol U g = mol U

4 How many grams are in 3.39 mol of table salt, NaCl?

5 3.39 mol NaCl 58.5 g mol = 198 g NaCl

6 How many atoms are in 5.2 mol of Cu

7 5.2 mol Cu 6.02 x Cu atoms mol Cu = 3.1 x Cu atoms

8 How many moles are in 9.76 x molecules of sulfuric acid, H 2 SO 4 ?

9 9.76 x H 2 SO 4 molecules mol H 2 SO 4 = 16.2 mol H 2 SO x H 2 SO 4 molecules

10 Some gaseous elements are composed of atoms

11 Other gaseous elements are composed of molecules

12 Many Gaseous elements are “diatomic”

13 Diatomic Molecules H 2 O 2 N 2 Cl 2 F 2 I 2 Br 2 Hydrogen (H 2 )Fluorine (F 2 )Oxygen (O 2 )Nitrogen (N 2 )Chlorine (Cl 2 )Bromine (Br 2 ) Iodine ( I 2 )

14

15 How can you tell which gaseous elements are atoms and which are diatomic molecules?

16 Diatomic Molecules H O N Cl F I Br H 2 O 2 N 2 Cl 2 F 2 I 2 Br 2 Hydrogen (H 2 )Fluorine (F 2 )Oxygen (O 2 )Nitrogen (N 2 )Chlorine (Cl 2 )Bromine (Br 2 ) Iodine ( I 2 )

17 Find the mass of 3.26 x molecules of O 2

18 3.26 x O 2 molecules

19 Find the mass of 3.26 x molecules of O x O 2 molecules mol O x O 2 molecules

20 Find the mass of 3.26 x molecules of O x O 2 molecules mol O g 6.02 x O 2 molecules mol O 2 = 1.73 x 10 6 g O 2

21 Prozac, C 17 H 18 F 3 NO, is an antidepressant in a group of drugs called selective serotonin reuptake inhibitors (SSRIs). Prozac affects chemicals in the brain that may become unbalanced and cause depression, panic, anxiety, or obsessive- compulsive symptoms. Find its molar mass.

22 17(12.0) + 18(1.0) + 3(19.0) = 309.0g/mol

23 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week?

24 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO day

25 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g day mg

26 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol day mg g

27 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg g week

28 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg g week = 4.53 x mol/week

29 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg g week = 4.53 x mol/week How many atoms of C would the patient consume in one week?

30 The recommended starting dose of prozac is 20.0 mg each day. How many moles of prozac would a patient starting prozac take in one week? 20.0 mg C 17 H 18 F 3 NO 0.001g mol 7 days day mg g week = 4.53 x mol/week How many atoms of C would the patient consume in one week? 4.53 x mol C 17 H 18 F 3 NO 6.02 x molecules 17 atoms C molmolecule = 4.64 x C atoms

31 Information for Upcoming Mole Quiz How does a mole relate to particles and mass? (example: One mole of H 2 O is 6.02 x H 2 O molecules and has a mass of 18g). Be able to use this information in factor-label problems. Know how to determine the number of atoms in a molecule. Be able to use this information in factor- label problems. Be able to determine the number of grams/molecule. Identify the diatomic gases. Do metric conversions.

32 Homework Worksheet – Mole Conversions (There is a front and back to this worksheet).


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