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ZX-BB7B74EE102025年6月美国B卷 · 第 2 题
2025年6月美国B卷 · 原库模块 2 · Q2 原库参考解析
A scientist analyzed a soil sample with a mass of 900 grams and determined that it contained 189 grams of water. What is the percentage of water, by mass, in this soil sample?
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