Question

Ca=CaO=CaCL2=CaCO3=Ca(OH)2

Answer 1

Объяснение:

Последняя реакция не идет в одну стадию, т. к известь (CaCO3) нерастворимый осадок и гашеная известь (Ca(OH)2) тоже нерастворимый осадок.

Answer 2

It seems like you've listed several chemical compounds and elements, all of which contain calcium (Ca) as their chemical symbol. Let's break down each one:

1. Ca: This represents the chemical element calcium. It is a metallic element with the atomic number 20 and is commonly found in nature in various compounds.

2. CaO: This is calcium oxide, also known as quicklime or burnt lime. It is a white, alkaline, and highly reactive compound used in various industrial processes, including as a construction material and in the production of cement.

3. CaCl2: This is calcium chloride, a salt that consists of calcium and chlorine ions. It is often used for de-icing roads, in food production, and in various industrial applications.

4. CaCO3: This is calcium carbonate, a common chemical compound found in nature, such as in limestone, chalk, and shells of marine organisms. It is also used as a dietary supplement and in various industrial applications.

5. Ca(OH)2: This is calcium hydroxide, also known as slaked lime or hydrated lime. It is a white powder used in industries like construction, agriculture, and wastewater treatment.

Each of these compounds has unique properties and uses, but they all contain calcium as one of their essential elements.