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Date: 6-1-2019
1019
Date: 7-12-2018
1062
Date: 4-3-2017
928
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Sodium carbonate (also known as washing soda or soda ash), Na2CO3, is a sodium salt of carbonic acid and is a fairly strong, non-volatile base. It most commonly occurs as a crystaline heptahydrate which readily effloresces to form a white powder, the monohydrate. It has a cooling alkaline taste, and can be extracted from the ashes of many plants. It is produced artificially in large quantities from common salt.
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كل ما تود معرفته عن أهم فيتامين لسلامة الدماغ والأعصاب
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ماذا سيحصل للأرض إذا تغير شكل نواتها؟
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جامعة الكفيل تناقش تحضيراتها لإطلاق مؤتمرها العلمي الدولي السادس
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