Question

Помогите пожалуйста очень надо!❤ II вариант1 Разделите предложенные вещества на простые и сложнье:HCl, NO, N, F. CuO, O, C,H, Ag, Ba(OH),. Pb. A,0. С..2. Укажите качественный и количественный состав вещества и рассчитайте егоотноситетую молекулярную массу: Са(РО).3. Относительная молекулярная масса вещества CaXO, составляет 136.Определите неизвестный элемент.4. Составьте |ормулы оксидов и хлоридов для элементов: Ca, Cu(1), W(VI), А.N(IV).5. Масса вещества N(), составляет 27г. Какому объему по соответствует?6. В какой и руд массовая доля купрума больше: CuS или Cuo?​

Answer 1

Substances and their classification:

To determine whether a substance is simple or complex, we need to analyze its chemical formula. Here are the substances provided and their classifications:

1. HCl: Simple substance. It consists of hydrogen (H) and chlorine (Cl) atoms. [[1]] 2. NO: Simple substance. It consists of nitrogen (N) and oxygen (O) atoms. [[2]] 3. N: Simple substance. It is nitrogen gas, which consists of nitrogen (N) atoms. [[3]] 4. F: Simple substance. It is fluorine gas, which consists of fluorine (F) atoms. [[4]] 5. CuO: Complex substance. It is copper(II) oxide, which consists of copper (Cu) and oxygen (O) atoms. [[5]] 6. O: Simple substance. It is oxygen gas, which consists of oxygen (O) atoms. [[6]] 7. C: Simple substance. It is carbon, which consists of carbon (C) atoms. [[7]] 8. H: Simple substance. It is hydrogen gas, which consists of hydrogen (H) atoms. [[8]] 9. Ag: Simple substance. It is silver, which consists of silver (Ag) atoms. [[9]] 10. Ba(OH)2: Complex substance. It is barium hydroxide, which consists of barium (Ba), oxygen (O), and hydrogen (H) atoms. [[10]] 11. Pb: Simple substance. It is lead, which consists of lead (Pb) atoms. [[11]] 12. A: Unknown substance. The substance is not specified, so we cannot determine its classification. 13. 0: Unknown substance. The substance is not specified, so we cannot determine its classification. 14. С: Simple substance. It is carbon, which consists of carbon (C) atoms. [[7]] 15. 2: Unknown substance. The substance is not specified, so we cannot determine its classification.

Qualitative and quantitative composition and molecular mass:

1. Ca(РО): The substance is not specified clearly. Please provide more information or clarify the formula to determine its qualitative and quantitative composition and calculate its molecular mass. 2. CaXO: The relative molecular mass of the substance CaXO is given as 136. However, the unknown element is not specified. Please provide more information or clarify the formula to determine the unknown element.

Formulas of oxides and chlorides:

To determine the formulas of oxides and chlorides for the given elements, we need to know the valence states of the elements: 1. Ca: Calcium forms the oxide CaO and the chloride CaCl2. 2. Cu(1): Copper can have multiple valence states. Please specify the valence state of copper to determine the formula of the oxide and chloride. 3. W(VI): Tungsten in the +6 valence state forms the oxide WO3 and the chloride WCl6. 4. А: The element is not specified, so we cannot determine the formula of the oxide and chloride. 5. N(IV): Nitrogen in the +4 valence state forms the oxide N2O4 and the chloride NCl4.

Mass to volume conversion:

To determine the volume corresponding to a given mass of a substance, we need to know the density of the substance. Without the density information, we cannot calculate the volume corresponding to the given mass of N().

Mass fraction of copper in ores:

To determine which ore has a higher mass fraction of copper, CuS or CuO, we need to compare their chemical compositions. CuS is copper(I) sulfide, and CuO is copper(II) oxide. The mass fraction of copper in each ore depends on the stoichiometry of the compounds and can vary.