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What is meant by the term chemical formula ? Write the chemical formula of calcium oxide. Calculate its formula unit mass. `("Atomic mass of Ca"=40u,

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What is meant by the term chemical formula ? Write the chemical formula of calcium oxide. Calculate its formula unit mass. `("Atomic mass of Ca"=40u, O=16u)`.
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Chemical formula of calcium oxide =CaO.
Formula unit mass Aromic mass of Ca +Atomic mass of O= `(40+16)=56u.`
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