It's impossible to give a definitive answer to the weight of one dollar because it depends on the type of dollar:

* US Dollar bill: A standard US dollar bill weighs approximately 1 gram. However, this can vary slightly depending on the specific bill's age and condition.

* US Dollar coin: There are many different types of US dollar coins, each with a different weight. For example, a silver dollar weighs 26.73 grams, while a Sacagawea dollar weighs 8.1 grams.

So, to answer your question, you need to be more specific about which type of dollar you're asking about.