1141118-光譜定量分析一元硬幣之合金組成
前言：這個一元硬幣指的是美金的一元。所以根據資料裡面有銅跟鎳的合金。 A U.S. $1 dollar coin's content depends on the series, but current circulating coins like the American Innovation $1 Coin are made of a copper alloy with a composition of approximately 88.5% copper, 6% zinc, 3.5% manganese, and 2% nickel . These modern coins are clad with a manganese brass outer layer. The edge inscriptions are on the edge itself, not the surface of the coin. Composition and specifications Composition: 88.5% copper, 6% zinc, 3.5% manganese, 2% nickel Weight: 8.100 grams (0.286 oz) Diameter: 1.043 inches (26.49 mm) Thickness: 0.079 inches (2.00 mm) Edge: Lettered, with inscriptions like "E pluribus unum", the mint mark, and the year of issuance 實驗室裡面我們用這兩瓶要當標準品配藥。這兩瓶都怕水，所以放在乾燥箱裡面。