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hey, how do i solve this? One gold atom is 3.3 * 10^(-22)g How many atoms do i need to make it weight 1 gram?

 Sep 20, 2016
 #1
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hey, how do i solve this? One gold atom is 3.3 * 10^(-22)g How many atoms do i need to make it weight 1 gram?.

 

You will need =1 / [3.3 x 10^-22] =3,030,303,030,303,030,303,030=3.03 x 10^21 atoms of gold.

 Sep 20, 2016
 #2
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Think about  this .......

 

If one atom weighs 1/2 of a gram, we just need to invert the fraction to find out how many attoms in a whole gram =  2/ 1   = 2

 

So

 

3.3 x  10-22   =

 

3.3 / 1022         invert this and we have

 

1022/ 3.3  ≈   3,030,303,030,303,030,303,030  atoms

 

 

 

cool cool cool

 Sep 20, 2016

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