A. Sodium chloride B. Magnesium oxide C. Water D. Potassium nitrate 相关知识点: 试题来源: 解析 C。解析:在化学中,水(water)是共价化合物(covalent compound)。共价化合物是由原子间通过共用电子对形成的化合物。氯化钠(sodium chloride)、氧化镁(magnesium oxide)和硝酸钾(potassium nitrate)都是离子化合物...
The disulfide compound which is displayed with formula C by covalent binding (the inside n of type C is integer 1 - 20 on the metalPROBLEM TO BE SOLVED: To provide a photoenergy transferable element obtained by forming a self- organized monomolecular film composed of a mixture of an energy ...
Classify the compound iron(II) nitrite as ionic or covalent. What is the formula for this compound? If the formula of an oxide of element X is XO, what is the formula of the nitride of X? How do you tell if a compound is ionic or covalent by its formula?
The chemical formula for copper sulfate is CuSO4.x H2O, indicating that it is a covalent compound comprising copper, sulfur, and oxygen. Its crystalline structure and pleasant smell are evident from its chemical composition. Figure (1) shows the molecular structure of copper sulfate. Fig 1. Chem...
The scientific study of matter's characteristics and behaviour is known as chemistry.Chemistry vocabularyandChemistry glossaryare different from the normal vocabulary. It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up...
Determine whether each compound is soluble or insoluble in water. (a) NaBr (b) PbSO_4 (c) MgSO_4 (d) AgBr (e) Al(OH)_3 Determine whether the following compound is soluble, moderately soluble, or insoluble in water: Hg...
After stirring the resulting solution for 3 h, 15 g of H2O and 4 g of NaCl were added and the pH was adjusted to 3.0 with 10% phosphoric acid. The product was extracted with methylene chloride and the extract dried over MgSO4. After concentrating the solution to 30 ml, the solution ...
However, phenoxybenzamine exerts a long-term effect in the brain with a half-life of approximately 24 hours. As an antagonist, phenoxybenzamine forms an irreversible covalent bond with α-adrenergic receptors, thus the effect of the drug lasts longer than its metabolic half-life [17]. This ...
Explain why the solution used for intravenous (IV) drips is a 0.9% (w/v) NaCl solution in H2O. Why would a 1 M solution of MgSO4 have greater conductivity than a 1 M solution of NaCl when dissolved in water, and would it be correct to argue that multiple charged ions present in Mg...
what test is commonly used to determine if a compound is ionic or covalent and what would be its results?什么实验通常用于决定一个化合物是离子键或共价键且它的结果是什么?当一种化合物可以在水溶液中发生电离时,也就是有离子存在时这种化合物就含离子键或是这种化合物由离子构成,这就是离子化合物,它...