We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byRoger Phillips
Modified over 5 years ago
IIIIIIIV Unit 5 – The Mole I. Molar Conversions
Molar Conversions n Molar Mass is a conversion factor to convert mass of any element or compound to moles. n Or to convert moles to mass.
Molar Conversions molar mass (g/mol) MASS IN GRAMS MOLES NUMBER OF PARTICLES 6.02 10 23 (particles/mol) ÷ ÷ X X
Molar Conversion Examples n How many moles of carbon are in 26 g of carbon? 26 g C 1 mol C 12.01 g C = 2.2 mol C
Molar Conversion Examples n How many grams are there in 11.9 moles of chromium? 11.9 moles Cr 52.00 grams Cr 1 mole Cr = 619 grams Chromium
Molar Conversion Examples n How many moles are there in 98.3 grams of Al(OH) 3 ? Need Molar Mass of Al(OH) 3 = 78.01 grams/mole 98.3 grams Al(OH) 3 1 mole Al(OH) 3 78.01 grams = 1.26 moles
Molar Conversion Examples n Find the mass of 2.1 10 24 molecules of NaHCO 3. 2.1 10 24 molecules 1 mol 6.02 10 23 molecules = 290 g NaHCO 3 84.01 g 1 mol
The Arithmetic of Equations
Mole Conversions Example 1. Calculate the number of molecules in a 7.84 g sample of phosphorus trichloride (PCl 3 )
IIIIIIIV The Mole Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number (N A ) n 1 mol = 6.02 items A.
If your given is in moles: Determine the molar ratio to change from moles of your original substance to moles of the desired substance If you want your.
Molar mass is the mass in grams of one mole of particles (atoms, ions, molecules, formula units). Equal to the numerical value of the average atomic.
I can calculate the molar mass of a compound Sometimes the molar mass is called the formula mass!
The Mole Chapter 9 What is a mole? A mole of a substance is the amount of that substance which contains 6 x particles of that substance.
IIIIIIIV The Mole I. Molar Conversions A. What is the Mole? n A counting unit n Similar to a dozen, except instead of 12, it’s 602 billion trillion 602,000,000,000,000,000,000,000.
Chapter 7: Chemical Formulas and Chemical Compounds
Unit 2 Lesson #5 Avogadro’s Number & The Mole (p.14-16)
The Mole Molar Conversions.
IIIIIIIV Ch. & 7 – The Mole I. Molar Conversions.
Molar Mass = mass in grams of one mole –Units grams/mole For elements, molar mass = atomic mass Why aren’t all atomic masses whole numbers? –Remember that.
AP Notes Chapter 7 Mole Representative Particles Molecular Mass (mm) - gam used for atoms - gmm used for molecules - gfm used for formula units MoleVolume.
IIIIIIIV Unit 6 - The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number (N A ) n 1 mol = 6.02 10.
IIIIIIIV The Mole I. Molar Conversions A. What is the Mole? n A counting number (like a dozen) n Avogadro’s number n 1 mol = 6.02 items A large.
© 2020 SlidePlayer.com Inc. All rights reserved.