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What is the formula for calcium sulfite?

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Quick Answer

The molecular formula for the chemical compound calcium sulfite is written as CaSO3. The formula illustrates that the compound contains one atom of calcium, represented by Ca; one atom of sulfur, represented by S; and three atoms of oxygen, represented by the symbol O.

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Full Answer

Calcium sulfite is the calcium salt derived from sulfuric acid. It is used as a food preservative in fruit-based products. Calcium sulfite has a molar mass of about 120.17 grams per mole, and it has a boiling point of 1,112 degrees Fahrenheit. The compound is composed of a calcium ion and a sulfite ion, which when combined together create a molecule carrying a neutral charge.

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