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Illustrate the intermolecular forces of:
a. CaCl2 in H2O
b. NH3 and H2O
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- which of the following compounds is insoluble in water?a. Na2Sb. K3PO4C. Pb(NO3)2D. CaCl2E. All of the possible choices given are soluble in waterSuppose that CaCl2 is added as an impurity to Cao. what kind of vacancies would you expect to form: cation or anion? How many of those vacancies are formed for each anionic substitution?11.Which of the following is the least effective conductor? O 1. Purified water O 2. Tap water O 3. Mineral water O 4. Distilled water
- Calculate the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of CaF2 in 850.0 g of water. O 0.0167 O 0.00841 0.0540 O 0.01800 O 0.0248Which of the following statements correctly describe(s) nitrification? Degradation of waste products into NH3. Incorporation of N2 from the atmosphere into organic compounds. Conversion of NO3- or N02- to N2 and returned to the atmosphere. Conversion of NH3 to NO3- or N02-.11. Chlorine may be prepared in the laboratory from concentrated hydrochloric acid by heating it with A Concentrated H;SO4 B Manganese (IV) oxide C Sodium chloride crystals D Lead (II) oxide
- Disulfides are compounds that have S— S bonds, like peroxideshave O— O bonds. Thiols are organic compoundsthat have the general formula R— SH, where R is a generichydrocarbon. The SH- ion is the sulfur counterpart ofhydroxide, OH-. Two thiols can react to make a disulfide,R— S— S— R. (a) What is the oxidation state of sulfur ina thiol? (b) What is the oxidation state of sulfur in a disulfide?(c) If you react two thiols to make a disulfide, are youoxidizing or reducing the thiols? (d) If you wanted to converta disulfide to two thiols, should you add a reducingagent or oxidizing agent to the solution? (e) Suggest whathappens to the H’s in the thiols when they form disulfides.Which one of the following substances would be the most soluble in CCl4? HF I2 Li2O C6H14 CH3COOH8. Identify the substance in each of the following pairs that would have the higher melting point and explain. a. Nacl or HCI b. NH3 or PH3 W DELL DELL
- In which of the following aqueous solutions would you expect PbCl2to have the lowest solubility? A. 0.020 M KCI B. 0.020 M BaCl2 C. 0.015 M PBNO3 D. pure water E. 0.015 M NaClb) A solution of chlorine in water is used as a disinfectant. The equation below indicates the reaction between chlorine and water. Ch+H;O- i) > Cl+ CIO+ 2H Give a balanced equation for the reaction that occurs when a concentrated solution of NaOH is added to this medium. What name is given to this type of reaction. ii) iii) A) Write balanced equations for the preparation ofHF and HI from CaF, and Nal respectively. B) Explain any similarity or difference in the methods of preparation of HF and HI.Chemistry why can Oil Red O diffuse through a lipid solvent (which simulated the cell membrane) and Methylene Blue cannot?
