Question

Ca - Ca(OH)2 - CaCO3 - Ca(HCO3)2 - CaBr2 - CaSO4

Answer 1

Привет 1) Ca+2H2O=>Ca(OH)2+H2 2) Ca(OH)2+Na2CO3=>2NaOH+CaCO3 3)СaCO3+CO2+H2O=>Ca(HCO3)2 4)Ca(HCO3)2+HBr=>CaBr2+2CO2+2H2O 5)CaBr2+H2SO4=>CaSO4+2HBr Это всё, сделано с расстановкой коэффициентов.

Answer 2

The list includes several chemical compounds that contain the element calcium (Ca):

1. Calcium (Ca) - a metallic element with the atomic number 20, commonly found in rocks, shells, and bones.

2. Calcium hydroxide (Ca(OH)2) - also known as slaked lime, a compound that is commonly used in construction, water treatment, and in the production of paper.

3. Calcium carbonate (CaCO3) - a compound found in rocks, shells, and pearls, and also commonly used in the production of cement, as a dietary supplement, and in the manufacturing of various materials.

4. Calcium bicarbonate (Ca(HCO3)2) - a compound formed when carbon dioxide is dissolved in water containing calcium ions. It is present in natural mineral water and is also used in the treatment of water for domestic and industrial use.

5. Calcium bromide (CaBr2) - a salt that is used in oil and gas drilling fluids, as a flame retardant, and in photography.

6. Calcium sulfate (CaSO4) - a compound commonly found in nature as the mineral gypsum. It is used in construction, as a food additive, and in the manufacturing of various products such as plaster and cement.