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- 1. Which of the following would you expect to have the higher melting point? Explain why.Explain the factors determine the melting point of a compound ?Which substances have the lowest melting points: ionic, covalent, or metallic? What does the low melting point tell you about the strength of the forces holding the particles together?
- Using principles of chemical bonding and/or intermolecular forces, explain each of the following. (a) Xenon has a higher boiling point than neon has. (b) Solid copper is an excellent conductor of electricity, but solid copper chloride is not. (c) SiO2 melts at a very high temperature, while CO2 is a gas at room temperature, even though Si and C are in the same chemical family. Note: Please briefly explain A-C. Thank youWhat are the effects of impurities on the boiling and melting points of a compound?Which reasoning best supports the fact that H2, has a higher melting point than he? A. The phase changes of melting breaks the covalent bond in H2, and HE done any have a covalent bond b. H2 has a greater surface area than he we used more polarizadle c. He has more electrons than H2 and forms stronger attractions
- Which compound would you expect to have the highest boiling point? Why? a. H2O b. H2S c. HClWhy will MGO will have a higher boiling point than KCL?An unknown substancehas a melting point of 1127 ∘C,is soluble in water,does not conduct heat as a solid, andis hard.Given these properties which of the following are possible identities for the unknown substance?CdiamondSF6CoF2Na
- Ionic compounds tend to have higher melting and boilingpoints and to be less volatile (that is, have lower vaporpressures) than covalent compounds. For each of the following pairs, use electronegativity differences to predictwhich compound has the higher vapor pressure at roomtemperature.(a) CI4 or KI(b) BaF2 or OF2(c) SiH4 or NaHWhich of the following has a higher melting point: NH4NO3 or H2O? Explain your reasoning, including the attractive forces present in both compounds.23 Which of the following compounds has the highest melting point? A. C6H6 B. H2O C. ZnO D. CCl4