جميع المواضيع المتعلقة بـ ‘compound’

 

Molecular Mass of the Elements and compounds

Molar mass  means the mass of one mole. The molar mass concept can be applied to elements and to compounds. Molar mass is expressed in grams. For example, one mole of carbon has amass of 12 grams. Therefore, carbon’s molar mass is 12 grams. This is equivalent to the statement that 6. 02 x 1023 atoms of carbon have a mass of 12 grams. Consider this example: chemists know that…

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compounds

Compounds

Compounds are pure substances that differ from elements because they contain more than one kind of atom. The Law of Definite Composition (or the Law of Definite Proportions) applies to compounds.

For example, sodium chloride contains one atom of sodium for each atom of chlorine. Water contains two atoms of hydrogen for each atom of oxygen.

It is known that two elements can combine with one…

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