英语翻译Even after twenty years of use most quarters have the sa

100162372022-10-04 11:39:542条回答

英语翻译
Even after twenty years of use most quarters have the same shiny appearance that they did when they were minted.Most pennies,however,have dulled considerably.What does this suggest about the position of the metal used to make quarters and the metal used to make pennies on the activity series?

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2haoha 共回答了14个问题 | 采纳率92.9%: 就算使用了20年后,大部分的两角五分的硬币还是像最开始他们铸造的时候一样新.但是,大部分一分钱硬币就会变的很糙.在铸造流动币种时两角五分的硬币和一分钱硬币的金属材料说明了什么呢?; 1年前

toupiao860 共回答了406个问题 | 采纳率: 即使是用了二十年，大多数25分硬币仍旧和刚铸造出来一样有光泽。然而大多数一美分硬币却相对暗淡。这显示了制造25分硬币的金属和1美分硬币的金属各在金属的活性顺序中的什么位置？
其实就说明了用来制造1美分的硬币比制造25美分硬币的金属更活跃，通常活跃的金属容易被氧化。
the metal used to make quarters is less active than the met...; 1年前

英语翻译Even after twenty years of use most quarters have the sa

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