The number of atoms in one kilogram of helium is 1.51 x 10^26 Calculate the number of atoms in 20 kilograms of helium Give your answer in standard form
1.51 x 10^26 x 20 =3,020,000,000,000,000,000,000,000,000 Number of atoms in 20 kg of He.
=3.02 x 10^27 in scientific notation.
