A student puts his signature with graphite pencil.if the mass of carbon in the signature is 10 to the power -12g, calculate the number of carbon atoms in the signature

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Solution

12 g of carbon contains = 6.022×10^23 atoms

Mass of carbon pencil = (10^-12 ) gram
10^-12 g of carbon contains = (6.022×10^23/12)×10^-12
Hence ,
0.501×10^-11carbon atoms are present in the signature.

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A student puts his signature with graphite pencil.if the mass of carbon in the signature is 10 to the power -12g, calculate the number of carbon atoms in the signature

12 g of carbon contains = 6.022×10^23 atoms Mass of carbon pencil = (10^-12 ) gram 10^-12 g of carbon contains = (6.022×10^23/12)×10^-12 Hence , 0.501×10^-11carbon atoms are present in the signature.

12 g of carbon contains = 6.022×10^23 atoms

Mass of carbon pencil = (10^-12 ) gram
10^-12 g of carbon contains = (6.022×10^23/12)×10^-12
Hence ,
0.501×10^-11carbon atoms are present in the signature.