Q.chemicals from mothballs
Can my tomatoes already have chemicals in them? I had already placed mothballs in my garden to prevent critters. They were placed about 10 feet from the plants. After reading this, I have removed them. Is it possible that some of the chemicals may already be in the tomatoes. They are large but not yet red.

I think removing them and the distance they were from your plants would be adequate safety measure for your garden and plants.
Your fruit should be just fine and safe to consume.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/mothballs-in-gardens.htm