Question

Please, help me !Ca+?=Ca(NO3)2

Answer 1

10 HNO3(разб) + 4 Ca = 4 Ca(NO3)2 + 5 H2O + NH3
Это один из вариантов. А так, в продуктах реакции вместо аммиака может быть много других соединений.

Answer 2

The chemical formula Ca(NO3)2 represents calcium nitrate. Calcium nitrate is a compound composed of one calcium ion (Ca2+) and two nitrate ions (NO3-). It is commonly used as a fertilizer in agriculture and as a component in concrete and explosives.

Calcium nitrate is a white, crystalline solid that is highly soluble in water. When dissolved in water, it dissociates into calcium ions (Ca2+) and nitrate ions (NO3-). The calcium ions provide essential nutrients for plant growth, while the nitrate ions serve as a source of nitrogen, which is an important element for plant development.

Calcium nitrate is often used in hydroponic systems and as a foliar spray to provide plants with a readily available source of calcium and nitrogen. It is also used in the production of fireworks and pyrotechnics due to its ability to produce vibrant colors when ignited.

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