Question

The number of carbon atoms in 12 mg of his home work writing

Answer 1

An effective teacher with a sense of humor! Hi Tina, One mole of Carbon-12 is exactly 12.0g, There are (20.0/12.0)moles with each mole having 6.022 x1023 atoms. So 20.0g of C-12 has (20.0/12.0) x 6.022 x1023 atoms.