Chemistry

Science Assignments 7-12
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EmmanuelEssiedu
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Chemistry

Post by EmmanuelEssiedu » Tue Oct 24, 2017 2:22 pm

Conversions with Avogadro’s number




1. How many moles of lead ,Pb are in  1.50 x 10 12 atoms of Pb ? 

2. How many moles of Tin, Sn, are in 2500 atoms of tin ?

3. How many atoms of aluminum ,Al, are in 2.75 moles  of Aluminum ?





 4. What is the mass on grams of 7.5 x 10 15 atoms of nickel, Ni ?


  5 . How many atoms of Cadmium, Cd, are in 3.00g of cadmium ?

6..    What mass of gold ,Au , contains the same number of atoms as 9.0 g of aluminum , Al?
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