![1.3 What is a Part per Million (ppm)? [SL IB Chemistry] - YouTube](https://i.ytimg.com/vi/OOLY8_0qjsE/maxresdefault.jpg "1.3 What is a Part per Million (ppm)? [SL IB Chemistry] - YouTube")
1.3 What is a Part per Million (ppm)? [SL IB Chemistry] - YouTube
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3.3.4. Parts per million (ppm) and Part per billion (ppb) – Wachemo University e-Learning Platform
