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How many eggs are there in 5 dozen? How many moles are in 2.25 grams of the element iron, Fe?

How many eggs are there in 5 dozen? How many moles are in 2.25 grams of the element iron, Fe?.

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How many eggs are there in 5 dozen? How many moles are in 2.25 grams of the element iron, Fe?

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  1. How many eggs are there in 5 dozen? How many moles are in 2.25 grams of the element iron, Fe?

  2. Standard: Utilize appropriate mathematical equations and processes to solve chemistry problems. 3221.Math.1Objective: The learner will convert the amount of a substance by using molar conversions through dimensional analysis.

  3. Introduction to the Mole

  4. What is a mole? Mole – SI base unit used to measure the amount of a substance What is molar mass? Molar mass – the mass in grams of one mole of a substance (ex. hydrogen 1.0079g/mol) What is the conversion factor for molar mass? 1 mole= mass of an atom (mass number)

  5. Practice What is the number of moles found in 50.4 grams of Uranium? Calculate the number of moles of 80.850 g of nitrogen. Calculate the number of moles in 334 grams of lead.

  6. Moles to Grams 6.0 moles carbon= __________ grams carbon 4.5 x 103 moles K = ___________ grams K Determine the mass in grams of 19.73 moles of the element boron, B.

  7. 8.90 mol Ca = ___________ g Ca 2.8 mol Fe = ___________ g Fe 4.59 x 102 mol F = _____________ g F 6.000 mol S = ____________ g S

  8. PROVE IT!!!!!!!

  9. 5.68 g N= ___ mol N

  10. 0.405 mol N

  11. 0.0821 mol Rb= ___ gRb

  12. 7.02 gRb

  13. 3400 g O= ___ mol O

  14. 210 mol O

  15. 34.71 mol As= ___ g As

  16. 2600. g As

  17. Exit slip Determine the number of moles of 46.3 grams of the element, copper, Cu? Evaluate and explain in words how you solve this problem. Tell me step by step in complete sentences (4 to 5 sentences).

  18. Homework What is the mass in grams of .375 mol of the element potassium, K. What is the mass in grams of 0.0135 mol of the element, sodium, Na? How many moles of gold, Au, are in 3.6 x 10-10 g How many moles of copper, Cu, are in 3.22g of copper?

  19. Standard: Utilize appropriate mathematical equations and processes to solve chemistry problems. 3221.Math.1Objective: The learner will convert the amount of a substance by using Avogadro’s number through dimensional analysis.

  20. Avogadro’s Number and Molar Conversions

  21. Avogadro’s Number Avogadro was born in Italy from 1776-1865 His field of study was physics. He developed Avogadro’s number which is 6.022 x 10 23 6.022 x 1023 = 1 mol

  22. Moles to Avogadro’s Number 0.30 mol of F = ______ atoms F. 2.66 mol of N= ______ atoms N? How many atoms are in 4.2 mol O?

  23. Avogadro’s Number to Moles 6.7 x 1026 atoms of Zn= _______ moles Zn 1.69 x 1023 atoms of V= _______ moles V? How many moles are in 3.29 x 1021 atoms Al?

  24. Practice Please !!!!!! 0.187 mol Ca = _________ atoms Ca How many atoms are in 1.45 x 10-17 moles of As? 5.00 x 1021 atoms of S = __________ moles S How many moles of neon are in 7.60 x 1024 atoms?

  25. PROVE IT!!!!!!!

  26. 5.68gN=__mol N

  27. 0.0821 mol Rb=__gRb

  28. 0.187molCa=__atoms Ca

  29. 7.60 x 1024Ne atoms=___ moles Ne

  30. Exit Slip How many moles are in 4.5 x 1024 atoms of Ni? How many atoms are 78.94 moles of iodine?

  31. HOMEWORK!!!!! Page 86 Practice Problems 1-3. Write the questions and show your work.

  32. Standard: Utilize appropriate mathematical equations and processes to solve chemistry problems. 3221.Math.1Objective: The learner will convert two step molar conversions. The learner will calculate the molecular weight of a compound, and apply it to molar conversions.

  33. Entrance SlipFind the mass in grams of 3.012 x 1024 atoms of Ca. The molar mass is 40.08 g/mol

  34. Converting Grams to atoms Example: Calculate the number of atoms in a 356 g sample of Ti? Determine the number of atoms in 7.60 g of He. 841 g Mn = __________ atoms of Mn

  35. Converting Atoms to Grams Example: Find the mass in grams of 2.44 x 1024 atoms of carbon, whose molar mass is 12.01 g/mol. Find the mass in grams of 2.11 x 1024 atoms of copper, whose molar mass is 63.55g/mol. 5.46 x 1024 atoms Pb = __________g Pb

  36. Mole Relay RaceStudent #1- Read the problem and set the problem up for the correct number of steps.Student #2- Place the units in the set up.Student #3- Fill in the correct conversion factors.Student #4- Solve and write the answer with the correct number of sig. figs.

  37. Exit Slip 4.06 x 1024 atoms Cu = _______ g Cu 702 grams P = ________ atoms P

  38. Molar Conversion 2- Step Homework 1. Determine the number of moles of fluorine in 9.23 x 10-9 g of fluorine. 2. How many atoms of germanium are in 3.00 x 106 g Ge? 3. What is the mass in grams of 1.2 x 1025 atoms of the element bromine, Br? How many atoms of beryllium are in 1.67 x 103 g of Be? 5. What is the mass in grams of 9.70 x 1023 atoms of magnesium, Mg?

  39. Molecular Weight

  40. What is the molecular weight of HCl?

  41. Molecular weight Molecular weight – the mass in grams of one moles of a substance. (g/mol) What is the molecular weight of the following: NaCl H2O Ca(NO3)2 Mg(NO3)2

  42. How many moles are in 67.68 grams of Al2S3?

  43. 345.0 grams of NaOH= ________ mol of NaOH5.6 moles of HBr= _______ grams of HBr 200.5 grams of MgCl2 = _______ mol of MgCl2

  44. 4.5 moles SiCl4 = _____ molecules SiCl42.3 moles of CaS = _______ formula units CaSDetermine the number of moles of F2 in 5.6 x 1023 molecules of F2.

  45. Exit SlipHow many grams are in 8.9 moles of Li2O?How many molecules are in 5.90 moles of CO?

  46. 267 grams of LiBr = ______ formula units LiBr7.8 x 1024 molecules of CO2 = _____ grams of CO2149.0 grams of OF2 = ______ molecules OF2

  47. HOMEWORKDetermine the mass in grams of 89.0 moles of NaNO3?6.00 grams of B2(SO4)3= ____ formula units of B2(SO4)37.8 x 1024 formula units of Ba3P2 = ____ moles of Ba3P25.6 x 1025 formula units V3(PO4)5= _____ grams V3(PO4)5

  48. Standard: Convert among the following quantities of a substance: mass, number of moles, and number of particles.Objective: The learner will review molar conversions.

  49. Fine the molecular weight of potassium chlorate.

  50. What is the mass in grams of 2.50 moles of oxygen, O2?

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