WebJan 17, 2024 · Topical test chapter 3 Chemistry Form 4 1. Name :_____ Class : _____ TOPICAL TEST CHAPTER 3 1. Write down the chemical equation of the following … Webb) Each oxygen molecule, O2 consists of two oxygen atoms. Therefore, the number of oxygen atoms in 0.5 mol of gas. 23 -1. = 0.5 mol x 6.02 x 10 mol x 2. = 3.01 x 10 x 2 = 6.02 x 1023. 23. 5 Molar mass. - The molar mass of a substance is the mass of 1 mol of the substance with the unit grams per mol or g mol-1. - The mass of one mole of atoms is ...
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