2) E Mass of 8×10⁶ uranium atoms = 4 x 10⁻²⁵ x 8 x 10⁶ (32 x 10⁻¹⁹) kg = (32 x 10⁻¹³) mg Answer: 3.2 x 10⁻¹² mg Share this:TwitterFacebookLike this:Like Loading...