A nickel, which is a five-cent coin in the United States, weighs 5 grams. This weight has been standard for nickels since 1866. The composition of the nickel is 75% copper and 25% nickel, which contributes to its weight. So, if you ever need to measure something small and don’t have a scale handy, you can use a nickel as a reference for 5 grams.
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