1 / 10

The Mole

The Mole. What’s in a Mole?. A mole of a substance is a unique measurement of quantity used in chemistry. 12 = dozen 1 ream = 500 sheets. What is molar mass?. The mass in grams of 1 mole of a substance is called the molar mass (g/mol) of the substance. (* The molar

ryan-franks
Download Presentation

The Mole

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Mole

  2. What’s in a Mole? A mole of a substance is a unique measurement of quantity used in chemistry. 12 = dozen 1 ream = 500 sheets

  3. What is molar mass? The mass in grams of 1 mole of a substance is called the molar mass (g/mol) of the substance. (* The molar mass is numerically equal to the formula Mass (amu).)

  4. Converting between grams and moles You can determine the number of moles by setting up an equation using a conversion factor which is a fraction whose value is equal to 1. • If we are given the # of grams of a compound, you can determine the # of moles, & vise-versa. • In order to convert from one to the other you must first calculate molar mass.

  5. g mol g/mol mol = g g/mol g = mol g/mol “The EquationTriangle”

  6. Example:GRAMS  MOLES (÷) A. The formula mass of sodium chloride (NaCl) is 58 amu (23 amu + 35 amu). The molar mass of NaCl is then 58 g/mol. If one mole of NaCl has a mass of 58 grams, how many moles of NaCl are in 11.2 gram samples?

  7. Example:MOLES  GRAMS (x) B. How many grams will you have in 2.50 moles of NaCl?

  8. PRACTICE PROBLEMS GRAMS  MOLES (÷) 2. 125 g of H2SO4 = ? moles

  9. MOLES  GRAMS (x) 7. 0.50 mol H2SO4 = ? grams

  10. Formula g/mol g mol (n) Equation HCl 0.25 g= g/mol x mol H2SO4 53.15 NaCl 3.55 Cu 1.27 PRACTICE PROBLEMS

More Related