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Elements and Compounds...

Elements and Compounds

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Mention two differences between an element and a compound

What is the difference between an element and a compound?

Elements or compounds which occur naturally in the earth's crust is known as:

The percentage composition of elements in a compound is calculated from the molecular formula of the compound. The molecular mass of a compound is calculated from the atomic masses of the various elements present in the compound. The percentage of mass of each element is then calculated with the help of the following relation. Percentage mass of the element in the compound. ("Mass of the element")/("Mass of the compound") Percentage of S in aluminium sulphate is