How many atoms would be present in a black dot marked on the paper with graphite pencil as a full stop at the end of a sentence.
[ Given mass is a of a dog =10^- 18 gram]
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As we know that graphite is the allotrope of carbon. Therefore molar mass of graphite = 12 g mol-1
Number of atoms of graphite = Given mass / Molar mass x 6.022 x 1023
= 10-18 g/12 g x 6.022 x 1023
= 5.0 x 104 atoms
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