Question

E. A student used a carbon pencil to write
his homework. The mass of this was
found to be 5 mg. With the help of this
calculate.
a. The number of moles of carbon in his
homework
writing.
b. The number of carbon atoms in 12 mg of his homework writing.​

Answer 1

Explanation:

a) no of moles = 5/12 =0.416 moles

b) no of moles=12/12=1

no of atoms=1×avagadro number

=6.023×10^23 atoms