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- Q. No. 5 Write functions and procedure of analysis of various volatile organic molecules by using Gas chromatographycalculate the weight of Sodium carbonate normality 0.1 N and prepared -1 * ? with 100 ml distilled water, given that the molecular weight was 106 gmWhich of the following methods of preparing 0.0010M HCl solution from 1.0M stock HCl Solution willyield the smaller overlall uncertainty? a. A one step Dilution that uses 1mL(±0.006) pipet and 1000mL(±0.30) Volumetric Flask, or b. A two-step dilution that uses 20mL (±0.03) pipet and a 1000mL(±0.30) volumetric flask and a25 mL (±0.03) pipet and a 500mL(±0.20) volumetric flask for second dilution.
- A 25% w/w aqueous phosporic acid solution has been prepared. Molecular weight of phosphoric acid is 97.994g/mol and the Molecular weight of water is 18.015g/mol. a. What is the moles of solute? b. What is the moles of solvent? c. What is the mole percentage of solvent? show complete solution. Tnx.12 g of unknown organic sample was dissolve in 706 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 2.72oC. Determine the molecular weight of the unknown sample? Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33 g/mL at 25 °C Round your answer to the nearest whole number, no units required.The partial molar volumes of acetone and chloroform, in a solution in which the molar fraction of chloroform is 0.4693, are 74.166 cm3mol-1 and 80.235 cm3 mol-1, respectively. What is the volume of 1,000 kg of this solution? Data: M.M. (acetone) = 58.08 gmol-1; M.M. (chloroform) = 119.07 gmol-1.
- 4. What volume of dilute nitric acid of density 1.11g/mL and 19% nitric acid by weight contains in 10g nitric acid. 5. Given 200cm3 of pure water at 40C, what volume of a solution of hydrochloric acid whose density is 1.175g/cm3 and containing 344.4% HCl by weight, could be prepared?6. How many grams of Na2CO3 are needed to prepare 500cm3 of a solution containing 10.0mg of CO32- per cm3?7. What volume of 0.300M H2SO4 is required to exactly neutralize 200mL of 0.500M NaOH?2NaOH + H2SO4 Na2SO4 + 2H2OA chemist is asked to separate the components of a mixture composed of 1.00 g each of the two compounds shown below. The chemist has access to the following bases: 10% aqueous NaHCO3 and 10% aqueous NaOH. Which base and how many mLs of the base (i.e., the minimum amount) are needed to completely separate these compounds from each other by liquid-liquid extraction?Prepare the following solutions: 100.0 mL 0.0500 M stock Ca2+ solution 50.0 mL 0.0050 M working standard Ca2+ solution from 0.0500 M Ca2+
- What volume (in microlitres) of a stock solution of 25% KCl would you need to generate 12.5mL of a 0.075% solution of KCl. What volume (in microlitres) of a stock solution of 25% KCl would you need to generate 12.5mL of a 0.075% solution of KCl. (MW of KCl is 74.55)Given the percent of ethanol in beer, 97% and percent(v/v) of ethanol through simple distillation: 26% and the percent (v/v) of ethanol through fractionating distillation: 27%. How would you calculate the theoretical quantity of pure ethanol that could be obtained by fractional distillation?A 18 g of unknown organic sample was dissolve in 756 mL of benzene. The boiling point of benzene was increased by 3.36oC. As the first step of analysis, determine the moecular weight of the unknow sample? Kb of benzene= 2.64oC/m Bb of benzene = 80.09 oC density of benzene = 0.874 g/mL at 25 °C Answer in whole number, no units required.