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Mole Conversions Part 1: Calculating Moles, Grams, and Atoms

Learn how to convert between moles, grams, and atoms in chemical compounds and elements. Includes practice problems and information on diatomic gases.

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Mole Conversions Part 1: Calculating Moles, Grams, and Atoms

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  1. Chapter 8 Mole Conversions Part 1

  2. How many moles are in 12.3 g of uranium?

  3. How many moles are in 12.3 g of uranium? 12.3 g mol U = 0.0517 mol U 238.0 g

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

  5. How many grams are in 3.39 mol of table salt, NaCl? 3.39 mol NaCl 58.5 g = 198 g NaCl mol

  6. How many atoms are in 5.2 mol of Cu

  7. How many atoms are in 5.2 mol of Cu 5.2 mol Cu 6.02 x 1023 Cu atoms = 3.1 x 1024 Cu atoms mol Cu

  8. How many moles are in 9.76 x 1024 molecules of sulfuric acid, H2SO4?

  9. How many moles are in 9.76 x 1024 molecules of sulfuric acid, H2SO4? 9.76 x 1024 H2SO4 molecules mol H2SO4 6.02 x 1023 H2SO4 molecules = 16.2 mol H2SO4

  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 Hydrogen (H2) Oxygen (O2) Nitrogen (N2) Chlorine (Cl2) Fluorine (F2) Bromine (Br2) Iodine (I2) H2O2N2Cl2F2I2 Br2

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

  15. Diatomic Molecules Hydrogen (H2) Oxygen (O2) Nitrogen (N2) Chlorine (Cl2) Fluorine (F2) Bromine (Br2) Iodine (I2) H2O2N2Cl2F2I2 Br2 H O N Cl F I Br

  16. Find the mass of 3.26 x 1028 molecules of O2

  17. Find the mass of 3.26 x 1028 molecules of O2 3.26 x 1028 O2 molecules

  18. Find the mass of 3.26 x 1028 molecules of O2 3.26 x 1028 O2 molecules mol O2 6.02 x 1023 O2 molecules

  19. Find the mass of 3.26 x 1028 molecules of O2 3.26 x 1028 O2 molecules mol O2 32.0 g 6.02 x 1023 O2 molecules mol O2 = 1.73 x 106 g O2

  20. Prozac, C17H18F3NO, 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.

  21. Prozac, C17H18F3NO, 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. 17(12.0) + 18(1.0) + 3(19.0) + 14.0 + 16.0 = 309.0g/mol

  22. 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?

  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? 20.0 mg C17H18F3NO day

  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 C17H18F3NO 0.001g day mg

  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 C17H18F3NO 0.001g mol day mg 309.0 g

  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 C17H18F3NO 0.001g mol 7days day mg 309.0 g week

  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 C17H18F3NO 0.001g mol 7days = 4.53 x 10 - 4 mol/week day mg 309.0 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 C17H18F3NO 0.001g mol 7days = 4.53 x 10 - 4mol/week day mg 309.0 g week How many atoms of C would the patient consume in one 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 C17H18F3NO 0.001g mol 7days = 4.53 x 10 -4 mol/week day mg 309.0 g week How many atoms of C would the patient consume in one week? 4.53 x 10-4 mol C17H18F3NO 6.02 x 1023 molecules 17 atoms C mol molecule = 4.64 x 1021 C atoms

  30. Information for Upcoming Mole Quiz • How does a mole relate to particles and mass? (example: One mole of H2O is 6.02 x 1023 H2O 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.

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

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