1. The problem asks to find the mass of the potato in grams given its mass in kilograms. 2. We know the conversion factor between kilograms and grams: $$1\text{ kg} = 1000\text{ g}$$. 3. To convert from kilograms to grams, multiply the mass in kilograms by 1000. 4. Given the mass is $$0.12\text{ kg}$$, the mass in grams is: $$0.12 \times 1000 = 120\text{ g}$$. 5. Therefore, the mass of the potato is 120 grams.