So if you have a non-coated iron nail in water and the conditions do not change does it rust at the same rate every day. will the weight of the nail change in a constant pattern, for example, the weight of the nail to start would be 5.5 and the end weight would be 6.1 and it sits in the water for 5 days. would the nail gain all 0.6 grams of rust weight in a constant pattern of 0.1