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A:
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- Calculate the molar concentration of a thiosulfate solution from the following information:A 40.-mL aliquot of a 0.00653 M KIO3 solution is added to a flask containing 2 g of KI and 10 mL of 0.5 M H2SO4. The resulting solution is titrated to a starch endpoint with 38 mL of the thiosulfate solution.Calculate the volume of hydrogen at 0°C and 1.00 atmthat is required to convert 500.0 g linoleic acid (C18H32O2)to stearic acid (C18H36O2). (See Sec. 9.1.)Ksp of silver phosphate Ag3PO4 = 1.3 x 10-20
- An iron ore has a 55% Fe2O3 with 5% moisture content. What is the Percentage of Fe2O3 in a dry basis?All the CaSO4 present in 0.511g of an impure sample of plaster is converted to 0.821g BaSO4. What is the % of CaSO4 in that sample?What is the concentration in units of grams of dye per liter of solution ,of the dilute dye solution that is produced as follows? transfer 19.53 ml of stick solution (6.10g/L) to a 200.0Ml volumetric flask and dilute to the 200 ml line with deionized water. Correct number of significant figs
- xwidevumaodecsrnocrmiocrvsntrclfmvrcxAMOICcinozcstbunvrlmxcmervor,tnivCCBSVI,dv,drvnkcnvunivrmrn binbo,bynlmrvtmiceucreivnebttnoevnejsfkdnxmvnfgkdjfkdgjksfjsnsfrgirog .1.If a dry gas is isothermally mixed with a liquid in a fixed volume, will the pressure remain constant with time? ans. No, explain. asnjcaericaqeonievtbcneivobuvntoigobnrcotuicnivvnrvC6H8O6(aq) + C12H7O2NCL2(aq) ----> C6H6O6(aq) + C12H9O2NCL2(aq) - C12H7O2NCL2 is abbreviated as DCIP - Molar Lass of C6H8O6(s) is 176.14 g/mol - Daily recommended intake (DRI) for adults: 90 mg of Vitamin C Askor & Bich found that it required 23.14 mlof 1.32 x 10^-3 M DCIP soliution to reach the endpoint when titrating a 7.50ml aliquot of pear juice. How many mg of ascorbic acid, C6H8O6 are present in the juice aliquot? _5.38_____(can you please show how to calculate this answer) How many ml of this juice would Bich have to drink in order to meet the daily recommended intake (DRI)?__126__ (A weight of 0.50 g was taken impure container containing sodium carbonate and bicarbonate. Dissolved in water and then crushed with hydrochloric acid (0.1 N), the burette reading game was at the endpoint of phenolphthalein of 10.5 ml and at the end point of the orange methylation point 30.1 ml. The percentage of sodium carbonate was in ................. knowing that the weights are: Na: 23, C: 12, O: 16
- What is the percent strength is 15g tinactin containing 0.15 g of tolnaftate power?In the preparation of the standard curve for protein analysis, 50 mn BSA (bovine serum albumin) dissolved in H2O to a final volume of 5 mL was used as stock solution. What is the weight of BSA in 0.1 mL of stock solution? In 0.2 mL?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 %)