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Posted by U15228749 (U15228749) on Tuesday, 28th May 2013
how would i do this one pls?
A one carat diamond used in a ring contained
1 X 10 ^22 carbon atoms.
What is the approximate mass of the diamond?
C) 1.0 g
D) 1.2 g
Posted by MissChemTeacher_Bitesize (U15172316) on Tuesday, 28th May 2013
You need to use Avogadro’s constant to work this out.
So, one mole of carbon (12g) contains Avogadro’s number of atoms 6.02 x 10 atoms .
You need to use proportion to calculate the mass of carbon if there are 1x10 atoms.
6.02 x 10 atoms -------------> 12g of carbon
1x10 atoms ------------------> xg of carbon
Mass of carbon in x = 1x10 x 12g / 6.02 x 10
Mass of carbon in x = 0.2g
Hope this helps.
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