مصادر الكيمياء موقع لتعليم الكيمياء بصورة مبسطة
Matter, Measurement, and Problem Solving Principles of Chemistry: A Molecular Approach 2e (Tro) Chapter 1 Matter, Measurement, and Problem Solving 1) Molecules can be described as A) a mixture of two or more pure substances. B) a mixture of two or more elements that has a specific ratio between components. …
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