If you have 1-propanal (b.p.-97 °C and methanol (b.p. 65 °C the best technique to separate these two alcohol is O a. steam distillation Ob. Fractional distillation Oc. simple distillation O d. vacuum distillation
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- Q/ Prepare 0.1 N and 0.1 M of 98% H,SO, in 250 ml. M.wt of H,SO, = 98 g/mol, and its Specific density (SP.gr.) = 1.09 .C B) C) D) E) (C6H5)3P NH₂ Zn(Hg) HCI ۵۰۰ NaOH heat DMSO 1. Excess CH31 2. Ag₂O, H₂O 3. heat -O 53% 35°F Cloudy 12K/sll.l 9:06 hw.pdf > Hw () Detevmine the melarity f e-ch of the foiloming W 1.5 mol kcl in l.SLof Salutn o.5 gm f Hz Sou inIL soo mL : sdusio- 20 gm of AI( No3), in 2.25 kg of Cusoy in l.45 Lot solution O o.006 mol. of Br, in lomL of sole O. v0075 gm of C Hs Noz in 1.usmL of solution Hint. The atomic numbers usedin the above Problem ave O= 16 Cu: 29 Br: 35 K= 19 S: 16 Al: 13 N = 7
- 3. ¿Cómo se preparan 1.0 L de solución de etanol al 12.0 %v/v? 4. ¿Cómo se preparan 500.0 ml de una solución de C5H1205 0.125M? 5. ¿Cómo se preparan 500.0 g de solución de C5H1205 al 0.100 m?Esc B II. Brightspace Aktiv Chemistry C D Q A Z + @ 2 S Alt W app.101edu.co Walmart - Hiring Ce... What volume in mL of 0.220 M HBr solution is required to produce 0.0145 moles of HBr? X O F3 - X # 3 11. Unit 12: Late Adulthood - Devel X E D F4 с 14 $ 4 F5 刀 LL F % 5 V F6 T G F7 A 6 Simulation play - Labster B Y F8 & 7 H Question 4 of 9 DELL U N F9 X D * 8 2 F10 1 Walmart - Hiring Center ( M 9 K F11 ဆုံး O O F12 L Alt P X + 4 7 +/- PrtScr W GQ1: What is the density (g/ml) of a 3.6M Sulfuric acid solution that is 29% H,So, by mass (Mwt. = 98)? Q2: Fill the blanks with suitable answers 1: The is the thing being dissolved. ......... 2: The branches of quantitative analysis are and 3. The filterability of the precipitate depend on the of practices. Q3: Which one is correct? 1. Molality changes with temperatures. 2. Molality does not change with temperatures. 3. Molarity changes with temperatures. 4. Normality changes with temperatures. Q4: What weight of pyrite ore (impure FeS,) must be taken for analysis so that the BaSO, precipitate weight obtained will be equal to one-half that of the percent S in the sample? Note: Mwt. of Ba =32, Mwt. of BaSo4 =233, Mwt. of FeS, =119
- Q/ Prepare 0.1 N and 0.1 M of 98% H,SO, in 250 ml. M.wt of H,SO4 = 98 g/mol, and its Specific density (SP.gr.) = 1.09.(Preparation of 0.1 N HCI solution in 250 ml D.W) Procedure: Preparation of approximately (0.IN) HCI from 37% and 1.2 Sp.g • Calculate the Normality of the concentrated HCl from the law: To prepare (500ml) of 0.IN HCL: NI VI = N2 V2 NI x ? = 0.1 x 500 • Transfer some of distilled water to 500ml volumetric flask and add the calculated volume of conc. HCI. Mix the content thoroughly. Complete to the mark with distilled water and make a label.Ce un e at A. At the composition of 61.9 %wt Sn, no solid phase exists. B. As more Sn is added the mixture freezes to a solid phase. C. When the composition is at 90 %wt Sn, most of the Sn is in the liquid state. D. At the composition of 30 %wt Sn, most of the Pb exist in the pure solid state 1050
- с. D. = Е. О ..... HI (2 eq.) Solvent HCOO ОН Br + ОН "Brcalkulate Hhemolar Solubiliky of pbl (kse s.o X167) in Awater the11. Four biochemical engineers were each given a chlorine-containing hydrocarbon to analyze and react with three different reagents. Their distribution is as follows: [a.] Engr. Consigo was given 52 mL of chloromethylcyclohexane [b.] Engr. Marchadesch acquired 1.0 L of 6.3 M chlorocyclopentane [c.] Engr. Bauzon had 9.12 cubic centimeters of 1-chloro-1-methyl-cyclopentane If they were to react each of there samples with: (1.) Sodium Acetate, (2.) Sodium Methoxide, and (3.) Potassium tert- butoxide, Draw the skeletal structures of the major product for each reaction. In the case that the major product could not be inferred, draw the all of the products in the resulting mixture.