🧬 实验式（最简式）计算器Empirical Formula Calculator

使用说明与常见问题How-to & FAQ

「实验式（最简式）计算器」是什么？What is the Empirical Formula Calculator tool?

由各元素的质量百分比或质量（克）计算化合物的实验式（最简式），列出摩尔数和比例；填入摩尔质量还能求出分子式。Find a compound's empirical formula from the mass percent or grams of each element, with the mole amounts and ratios; add the molar mass to get the molecular formula too.

如何使用「实验式（最简式）计算器」？How do I use the Empirical Formula Calculator tool?

在「实验式（最简式）计算器」中，填写「摩尔质量 g/mol（可选，求分子式）」等参数，结果会随输入实时计算并显示在下方。In the Empirical Formula Calculator: Fill in "Molar mass g/mol (optional, for the molecular formula)"; results are recalculated instantly as you type.

实验式怎么求？How is the empirical formula found?

1）把每种元素的质量（或百分比，按 100 g 计）除以原子量得到摩尔数；2）都除以最小的摩尔数；3）如果出现 1.5、1.33 之类，再同乘 2、3 等小整数，直到全部接近整数。1) Divide each element's mass (or percent, taking 100 g) by its atomic mass to get moles; 2) divide all by the smallest; 3) if you get values like 1.5 or 1.33, multiply all by 2, 3 and so on until they are near whole numbers.

实验式和分子式有什么区别？Empirical vs molecular formula?

实验式是原子的最简整数比，分子式是分子中实际的原子数。例如葡萄糖的实验式是 CH₂O，分子式是 C₆H₁₂O₆（摩尔质量 180.16 ÷ 30.03 ≈ 6）。The empirical formula is the simplest whole-number ratio; the molecular formula is the actual atom count. Glucose is CH₂O empirically and C₆H₁₂O₆ molecularly (180.16 ÷ 30.03 ≈ 6).

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「实验式（最简式）计算器」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Empirical Formula Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「实验式（最简式）计算器」免费吗？需要注册吗？Is the Empirical Formula Calculator free? Do I need an account?

「实验式（最简式）计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Empirical Formula Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.