The graphite present in a pencil weighs is 140 mg. Calculate the number of carbon atoms in it.

A signature, written in carbon pencil weighs 1 mg. what is the number of carbon atoms present in the signature?

A signature made by graphite pencil is of weight 2 xx 10^-3 g . Calculate the no. of carbon atoms in that signature.

An english word,written in carbon pencil weighs 1mg. What is the number of carbon atoms present in the word?

A signature written with carbon pencil weighs 1 mg. What is the number of carbon atoms present in the signature?

A signature written with carbon pencil weighs 1 mg. What is the number of carbon atoms present in the signature?

A student puts his signature with graphite pencil. If the mass of carbon in the signature is 10^(-12) g. Calculate the number of carbon atoms in the signature.

Calculate number of atoms in 1.2 g of carbon.