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- Properties of Liquids and IMF. Give a brief explanation1. Which of the following compounds can form hydrogen bonds with water?a. octaneb. HClc. NaCld. acetic acid2. Maria wants to determine the percent water content of an unknown hydrate of AB. Given the following data:mass of empty crucible - 12. 2784gmass of AB · xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. From the above data, give the correct formula for the hydrate. (AB₂ Molar mass = 129.84 g/mol)Suggest any examples of PAT Tools used for Crystallisation of Small Molecule Drugs ( SMD) purification ?
- The water supply for a midwestern city contains the followingimpurities: coarse sand, finely divided particulates,nitrate ions, trihalomethanes, dissolved phosphorus in theform of phosphates, potentially harmful bacterial strains,dissolved organic substances. Which of the following processesor agents, if any, is effective in removing each ofthese impurities: coarse sand filtration, activated carbonfiltration, aeration, ozonization, precipitation with aluminumhydroxide?A sample is known to consists of NaOH, or NaHCO3 or Na2CO3 or possible compatible mixture of these, together with inert matter. With methyl orange, a 1.100 g sample requires 31.4 ml of HCl ( 1.000ml is equivalent to 0.0140 g CaO). With phenolphthalein , the same weight of the sample requires 13.3 ml of the acid. Calculate the percent inert matter in the sample? ( ans. 17.7%)(A) if both sentences are true,(B) if both sentences are false,(C) if the first sentence is true but the second is false, and(D) if the first sentence is false but the second is true. 1. Insufficient dissolved oxygen is necessary for the life of fish and other aquatic organisms. As aquatic photosynthesis is light dependent, the dissolved oxygen produced will peak during daylight hours and decline at night. 2. The solubility of oxygen in water increases at colder temperatures, and decreases at higher temperatures. DO can be measured in milligrams of oxygen (O2) per liter of water. 3. The ideal electrical conductivity of totally pure water is 0.055 microSiemens, whereas typical deionized water has an electrical conductivity of 0.1 microSiemens. The freezing point of water at 1 atm is 100degC. 4. When water is mixed with metals, a metal hydroxide is formed and oxygen gas is evolved. The evolution of the oxygen gas from the reaction of metals and water is indicated by the hastened…
- ***28.10 An ammonium hydroxide solution is to be prepared at 77°F by dissolving gascous NH, in water. Prepare charts showing: (a) The amount of cooling needed (in Btu) to prepare a solution containing [ Ib mol of NH, at any concentration desired; (b) The amount of cooling needed (in Btu) to prepare 100 gal of a solution of any concentration up to 35% NHy; (c) If a 10.5% NH, solution is made up without cooling, at what temperature will the solution be after mixing?TWhich of the folle solution? Choose the will more more likely is added to the гад likely form when answer my. EDTA - Compter ca - EDTA - Compler 3. - my In- Cain. tathich of the following clour of metads is more 9 to form complex molecules with Lifand? す。 Alkalimetats 2. Alkali earth Transition metode none of these 3₁ 4. Likelyporymur 13 IUIT alone under thế force of gravity. QUESTIONS 1. What is the effect of absorbed moisture during the weighing process of the silica pellets on the calculated amount of SiO, in the water glass solution versus the actual amount? JordM 2. What is a possible commercial use for the silicone polymer, given the properties you observed? 3. Draw the Lewis structure of [B(OH),1. Name the geometry of this polyatomic ion. What are the expected O-B-0 bond angles? trcles dog boall-eac10 The cross-linking reaction of polyvinyl alcohol forms four water molecules for every B(OH)4 that cross- links two polymer chains. Given the sections of polyvinyl alcohol chains below, sketch how B(OH)4 cross-links the chains. Through what atom chain linkages are the C-C polymer backbones connected? 4. Н H. C. forloole Iyaivvlog be-esoo edi otw aos CH2 CH, o so or obrio/oi H-0. +B (ОН)4 C. mylo onooil kH. H. CH2 0mot o CH, 5. Is it likely that the two sections of the polymer chain are in the same plane?…
- Caustic potash that has been exposed to air is found on analysis to contain 90.00% KOH, 2.38% K2CO3 and 7.62% H2O. What weight of residue will be obtained if 1.00 g of this sample is added to 46.00 mL of 1.00 N HCl and the resulting solution, after neutralization with 1.070N KOH is evaporated to dryness?Determine the percentage Fe in a sample of limonite from the following data:Sample : 0.5000g ; KMnO4 used = 50.00 ml ; 1.000ml of KMnO4 is equivalent 0.005317 g Fe,FeSO4 used = 6.00 ml; 1.000ml FeSO4 is equivalent 0.009200 g FeO ( ans 44.59 %)Consider we have a silicate glass composition, this composition as shown below in percent by weight 15Na₂O +5K₂O +2.5MgO +9.5 CaO +6 BaO + 5Al₂O3 +57 SiO₂- First, convert this composition to mole percent. Then classify each oxide added to the glass according to Sun's bond criteria. According to this classification, is this composition make glass or not? Min MO K Mg Ca Al Si Valance 1 1 2 2 2 3 4 Dissociation energy per MOX (in Kcal.) 120 115 222 257 260 402 424 Coordination Number 6 9 6 8 8 4 4 Molecular weight of oxides is shown below Oksitler (Molekül Agri): Na,O (61.97), KO (94.18), MgO (40.31), CaO (56.08), Bao (153.33), ALO, (10156), 50, (60.08) Single Bond Strength (Kcal/mole) 20 13 37 32 33 101 106