A 0.0100-mol sample of urea, NH₂CONH₂, contains (The Avogadro constant is 6.02 x 10²³ mol^-1.)

a) 4.82 x10²⁴ atoms.

b) 6.02 x 10²² molecules.

c) 4.82 x 10²² atoms

d) 6.02 x 10²³ molecules.

e) 4.82 x 10²³ atoms.