H.W:- Calculate the Formal and Molar concentrations of the constituents in: 1) 2.30 g of ethanol (g. fw = 46.1) in 3.50 litres of aqueous solution. 2) 285 mg of trichloroacetic acid (g. fw = 163) in 10 mL of aqueous solution (its percentage of ionization = 73%).
Q: H.W:- Calculate the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw…
A: Given: Mass of ethanol= 2.30 g Formula Weight of ethanol= 46.1 g/mol Molar mass of ethanol= 46 g/mol…
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- A Sample Containfng mmol of KNOS is "parsed 6.00 x10-2² mmol of vesay ad z.00x102 mmol af ves@y ad 2.00x1o2 though a cation -excharye Column. the Colculate. volume o.02.00 M NaH of needed to titrete the elwate,Rich LTI e Post Attendee - Zoom M MyOpenMath - MAT 129 enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [References] Use the References to access important values if neede Match the following aqueous solutions with the appropriate letter from the column on the right. |1. 0.163 m Mn(CH;COO)2 A. Highest boiling point 2. 0.153 m Cul2 B. Second highest boiling point 3. 8.60×102 m Cr2(SO4)3 C. Third highest boiling point 4. 0.400 m Sucrose (nonelectrolyte) D. Lowest boiling point Submit Answer Try Another Version 2 item attempts remaining Visitedon in a 1. 200 Sample was precipi toled as the hdroxide and ignited to Ferm Fez0 (0. 352 1 FW= 159-7 lmal). Fnd %Fe (AW : 55-8 glmal)in the Sample. 4 A 2-560 g of impure CCl, Sample was disselved in water and precipitated wii th excess Na Cou Selution. 1F i.245g CaGOu (FW= 12891ml) was obtained, what is the percentage f Cack (FW= mglmal) in the impure Sample? Cu: A 0-21219 sample of an organic Compound was and the Ce, was burned in a stream of oxygen, and the CO2 was Callected in a solution of BalOH), Caleulate the %C in the Sample if o.co06 g of Ba COg was hamedd (FW Ba CO, = 197.34g mol), (AW C=12 glm)
- What is the molar fraction of glycine in an aqueous solution whose concentration is 0.140 molkg-1. Data: Mass H2O = 1 kg; M.M. H2O = 18.01 gmol-1.calkulate Hhemolar Solubiliky of pbl (kse s.o X167) in Awater theK/s 9:06 hw.pdf > Hw () Determine the melarity of e-ch of the folloning 2.25 kg of Cusoy in 1.45 Lof solusion O,006 mol. of Br, in lo mL of soleie O. s 0075 gm of C HHs Noz i n 1.osmL of solution Hint. The atomic numbers used in the above Problem ave O = 16 Cu: 29 Br: 35 K = 19 CI - 7 S: 16 Al: 13 N = 7
- 1.0 M H KOAC in 100 ml. Ans. 4.53. at the ec 8. 50 ml 0.1 M NH, is mixed with 100 ml 0.1 M HCI. What is the pi df the resulting mixture? 28. Sel volume Ans. 1.48. 9. Repeat problem 8, hutA sample of processed meat scrap weighing 4.000 g is digested with concentrated HSO. and Hg(catalyst) until the N present has been converted to NHHSO.. This is treated with excess NaOH, and the liberated NHs is caught in a 100-ml of H.SO. ( Iml 0.01860 g Na:OJ. The excess acid requires 57.60 ml of NaOH ( ImL = 0.12660 g potassium acid phthalate, KHCaH.OJ. Calculate the percentage protein in the meat scrap 4.Al Rubkhi CHEM1100Fundamentals Of Chemistry/3 ard / My courses/ 53/CHEM1100/3/ Topic 16 / CHEM1100 Fundamentals of Chemistry S3 Final Exam Dec.2020 The solvent in KBr solution is OA. KBr of О В. Br on OCK D. Water Next ON EXP-4 Jump to...
- Show complelesolutions for each of the problem. Sliow For the analyris of eunknown seda and vimegas ampler, 25.0 mL soda and 1.0 mL vimegar samples were diluted to in deparate Elenmeyu flasks. KHP, 0:85 g. (Puity = 50.0 mL ११.१४1, : 9.98%.; Molas mass = 204.2z g/mal) was titrated mith 11.5 mb of NaOH. affer the standardigatien step, it required O.0143 L of NaOH tor reach the end point with the sosa sample while it teok winegar as the indicator for the 2 significant figures. 0.00885 L with the saneple. Phemalphthalein as experiment. Expess all andwer in esed A) Determine the concentratiou of the titraut (NAOH). B) Determine the concentration ofy the unknown Vimegan sanmple. c. Determine the concentration off the unkmoun soda tample. CS Scanned with CamScannerH.W:-) النانول %3D Calculate the Formal and Molar concentrations of the constituents in 2.30 g of ethanol (g. fw 46.1) in 3.50 litres of aqueous solútion. (4) Molal concentration (Molality) m The solution concentration produce from dissolved solute (mole) in solvent (kg), molalit- does not change with temperature and used for physicochemical measurements. fuom mixing 4 g NaOH wi6. The mercury in a 0.839 g sample was precipitated with an excess paraperiodic acid, H¿IO, 5Hg + 2H,IO, → Hg;(IO,); + 10H The precipitate was filtered, washed free of precipitating agent, dried and weighed, 0.3408 g being recovered. Calculate the percentage of Hg,Cl, in the sample.