2025年3月美国B卷 · 第 4 题

2025年3月美国B卷 · 原库模块 1 · Q4 原库参考解析

A piece of a metal alloy called delta metal has a total mass of 200.0 grams. The equation \( c+z+3.6=200.0 \) relates the mass of copper c, in grams, and the mass of zinc z, in grams, in this piece of metal. If this piece of metal contains 110.0 grams of copper, how many grams of zinc does it contain?

2025年3月美国B卷 · 第 4 题

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