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Date: 21-1-2018
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Date: 5-4-2017
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Date: 5-3-2019
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Empirical formulas
An empirical formula indicates the different types of elements in a molecule and the lowest whole-number ratio of each kind of atom in the molecule. For example, suppose you have a compound with the empirical formula C2H6O. Three different kinds of atoms (C, H, and O) are in the compound, and they’re in the lowest whole-number ratio of two carbons to six hydrogens to one oxygen.
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دراسة تحدد أفضل 4 وجبات صحية.. وأخطرها
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العتبة العباسية تستعدّ لتكريم عددٍ من الطالبات المرتديات للعباءة الزينبية في جامعات كركوك
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