Question

Ca - CaO - Ca(OH)2 - Нитрат кальция; S - SO3 - H2SO4 - сульфат натрия

Answer 1

2Ca + O2 = 2CaO

CaO + H2O = Ca(OH)2

Ca(OH)2 + Cu(NO3)2 = Ca(NO3)2 + Cu(OH)2

S + O2 = SO2  

2SO2 + 3O2 = 2SO3

SO3 + H2O = H2SO4

H2SO4 + 2NaOH = 2Na2SO4 + 2H2O

Answer 2

1) 2Ca + O2 --- CaO2

2)CaO +H2O --- Ca(OH)2

1)S + O2 --- SO2

2SO2+O2 ---2SO3

2)SO3+H2O --- H2SO4

Answer 3

It seems like you've provided a list of chemical compounds related to calcium (Ca) and sulfur (S). Let's go through each one:

1. Ca - Calcium: Calcium is a chemical element with the symbol Ca and atomic number 20. It is an essential mineral for living organisms and is involved in various biological processes, including muscle contraction, nerve transmission, and bone formation.

2. CaO - Calcium Oxide (Quicklime): Calcium oxide is a white, alkaline compound commonly known as quicklime. It is produced by heating calcium carbonate (limestone) at high temperatures. Quicklime is used in various industrial processes, such as cement production, water treatment, and as a flux in metallurgy.

3. Ca(OH)2 - Calcium Hydroxide (Slaked Lime): Calcium hydroxide is a white, alkaline compound formed when calcium oxide reacts with water. It is commonly known as slaked lime and has various applications, including in construction (mortar and plaster), as a pH regulator in water treatment, and in some food processing.

4. Нитрат кальция (Nitrate Calcium): Calcium nitrate is a colorless, crystalline compound with the chemical formula Ca(NO3)2. It is a common fertilizer used to provide plants with a source of calcium and nitrogen.

5. S - Sulfur: Sulfur is a chemical element with the symbol S and atomic number 16. It is a yellow, non-metallic element and plays a vital role in various biological processes. Sulfur is also used in the production of sulfuric acid and various other chemical compounds.

6. SO3 - Sulfur Trioxide: Sulfur trioxide is a highly reactive, colorless gas with the chemical formula SO3. It is an important intermediate in the production of sulfuric acid (H2SO4) and is also used in the synthesis of other sulfur-containing compounds.

7. H2SO4 - Sulfuric Acid: Sulfuric acid is a strong mineral acid with the chemical formula H2SO4. It is one of the most widely used industrial chemicals and has numerous applications, including in the manufacturing of fertilizers, detergents, batteries, and various chemical processes.

8. Сульфат натрия (Sodium Sulfate): Sodium sulfate is a white, crystalline compound with the chemical formula Na2SO4. It is used in various industries, such as the production of detergents, glass, and textiles. It can also be found in some natural mineral deposits.

If you have any specific questions about these compounds or their properties, feel free to ask!