Answer: 6 protons will be found
Explanation: If Carbon (C) has a negative one charge and a weight of 13, it means that the carbon atom has gained an extra electron and has an atomic mass of 13 atomic mass units (amu).
To determine the number of protons in a carbon atom, we need to look at the atomic number of carbon, which is 6.
In a neutral atom, the number of protons is equal to the atomic number. However, since carbon has a charge of -1, it means that it has gained an extra electron.
Therefore, the number of protons in a carbon atom remains the same as the atomic number, which is 6. The charge only affects the number of electrons in the atom.