How many atoms are there in 64.5 grams of methane?

Answer 1

Molecular mass of CH4 = 12.0 + 4(1.0) = 16.0

Amount of CH4 = 64.5/16.0 = 4.03mol

1mol of CH4 contains 6.02 x 1023 molecules (avogadro constant).

Therefore 4.03mol of CH4 contains 4.03 x 6.02 x 1023 = 2.43 x 1024 molecules.

Answer 2

To find the number of atoms in 64.5 grams of methane (CH4), you first need to calculate the moles of methane using its molar mass (16 g/mol). 64.5 g / 16 g/mol = 4.03 moles. Since 1 mole of methane contains 5.02 x 10^23 molecules, the total number of atoms will be 4.03 moles * 5.02 x 10^23 atoms/mole = 2.02 x 10^24 atoms.