Question

Только простые вещества: А)Na2O, HCl ;Б)Cu, Mg; B)H2, Al2O3; Г)HCl, HNO

Answer 1

Cu, Mg - простые вещества, правильный ответ Б)........................

Answer 2

А) Na2O, HCl

Na2O is the chemical formula for sodium oxide, which is an ionic compound consisting of sodium (Na) cations and oxide (O) anions. It is a white solid that is highly reactive with water, producing sodium hydroxide (NaOH) as a result.

HCl is the chemical formula for hydrochloric acid, which is a strong acid. It is a colorless, highly corrosive liquid that is commonly used in various industrial and laboratory applications. When dissolved in water, it dissociates into hydrogen ions (H+) and chloride ions (Cl-).

Б) Cu, Mg

Cu is the chemical symbol for copper, which is a metallic element. It is a reddish-brown metal that is known for its excellent electrical conductivity and resistance to corrosion. Copper is widely used in electrical wiring, plumbing, and various industrial applications.

Mg is the chemical symbol for magnesium, which is another metallic element. It is a silver-white metal that is lightweight and has a high strength-to-weight ratio. Magnesium is commonly used in alloys, as well as in the production of flares, fireworks, and lightweight structural materials.

В) H2, Al2O3

H2 is the chemical formula for hydrogen gas, which is a diatomic molecule consisting of two hydrogen (H) atoms. Hydrogen is the lightest and most abundant element in the universe. It is highly flammable and is used as a fuel in various applications, such as in hydrogen fuel cells.

Al2O3 is the chemical formula for aluminum oxide, which is an ionic compound consisting of aluminum (Al) cations and oxide (O) anions. It is a white solid that is commonly known as alumina. Aluminum oxide is used in the production of ceramics, abrasives, and as a catalyst in various chemical reactions.

Г) HCl, HNO

HCl is hydrochloric acid, as mentioned earlier.

HNO is not a recognized chemical formula. However, if you meant HNO3, it is the chemical formula for nitric acid. Nitric acid is a strong acid that is commonly used in the production of fertilizers, explosives, and various organic compounds. It is a highly corrosive liquid that dissociates into hydrogen ions (H+) and nitrate ions (NO3-) when dissolved in water.

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