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Home Q & A Board Biology-Related Homework Help Cell Biology
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jennwatson05 jennwatson05
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6 years ago
Avogadro's number, calculated from the atomic weight of hydrogen, tells us how many atoms or molecules are in a mole.
 
  The resulting base for all calculations of moles and molarity (how many molecules are present when you weigh out a substance or measure from a stock solution) is the following:
 
   1 g of hydrogen atoms = 6  1023 hydrogen atoms = 1 mole of hydrogen
 
   Sulfur has a molecular weight of 32. How many moles and atoms are there in 120 grams of sulfur?
  (a) 3.75 and 6  1023
  (b) 32 and 6  1023
  (c) 1.75 and 1.05 1024
  (d) 3.75 and 2.25  1024
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JiminieJiminie
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jennwatson05 Author
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6 years ago
Brilliant ツ
klyn
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Yesterday
Thanks
jblazah
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2 hours ago
This site is awesome
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