Mole Project

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  • Grab a piece of chalk and find its mass using the electronic balance and then write your name on the lab table with the chalk and then find its mass again after using it to write your name
  • Stephen Curry
  • Now find the difference of the masses, you will use this to find how many moles of chalk you used.
  • Moles? *confused look*
  • No not the animal! A mole is the SI unit for the amount of a substance. One mole is equal to 6.02 x 10²³ particles, which we call Avagadro's number. Lets take a look at how many moles of chalk used.
  • Take the amount of chalk that you used, and divide that by the molar mass of chalk (CaCO₃) and you will end up with moles. Use proportions and working this equation out you will see you used .00029973 moles of chalk.
  • .03 g CaCO₃ *
  • 1 mol CaCO₃ ------------------- 100.09 g CaCO₃
  • = .00029973 moles CaCo₃
  • Wow! Now I've learned that in chemistry a mole isn't a fuzzy animal, but an actual unit to judge the amount of a substance, and one mole is equal to 6.02 x 10²³ particles. Not only did I learn what moles are, but I also learned the proper way to set up proportions to slove for moles!
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