Step-by-step explanation:
1 kg = 100000 cg
The mass of a proton in cg can be found as follows:
mass of proton in cg = (mass of proton in kg) x (conversion factor)
mass of proton in cg = (1.67 × 10^-27 kg) x (100000 cg/kg)
mass of proton in cg = 1.67 × 10^-23 cg
Therefore, the mass of a proton in cg is 1.67 × 10^-23 cg (to three significant figures).