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Calcium oxide (CaO) contain calcium and oxygen.

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Q: What elements are found in calcium oxide?
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What is the name of the compound oxygen and calcium form?

The compound that contains only these two elements is calcium oxide.


What is the word equation for extraction of calcium from calcium oxide by electrolysis?

calcium oxide --> calcium + oxygen


How much elemental Calcium is there in Calcium oxide?

Calcium (elemental Ca)= Calcium Oxide x 0.715 so very approx 70% of Calcium Oxide is Calcium in the elemental form.


Will I2 iodine interact with calcium to form calcium iodide?

The calcium iodide is obtained by the reaction between calcium carbonate (CaCO3) or calcium oxide (CaO) and the hydroiodic acid (HI), not by a direct reaction of the elements.


What elements are found in limestone chalk and shells?

The element calcium is found in all four items.