1. The problem statement, all variables and given/known data A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 multiplied by 10-27 kg. Determine the density of the proton. 2. Relevant equations Volume=(4/3)pi*r^3 Density=mass/Volume 3. The attempt at a solution I first got the radius: 1.2 * 10^-15 To get the volume i did: (4/3)*pi*(radius)^3 and i got 7.2 * 10^-45 as the volume To get density i just jiust divided 1.67*10^-27/7.2*10^-45 and i got 2.31 *10^17 as the answer which is wrong.