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hi ! can you provide a step-by-step solution with explanation for this problem ? i really want to work on chemistry since i'm having a hard time answering questions. thank you <3
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- make 100.0 mL of either 1.0 M or 0.10 M ethanol (aqueous). Start with a stock ethanol solution that is 95.0% ethanol by mass and has a density of 0.789 g/mL.2. Use the formula listed below to calculate how much of each ingredient should be used to make 20,000 ml of Chigger Dope that is used to treat chigger insect bites. Add your solution below the table. Original Conversion New Orange Syrup Formula Factor Formula Benzocaine 400g Methyl Salicylate 160mL Salicylic acid 40g Isopropyl Alcohol NF, 99% 5840mL Pure water qs ad 8000mL Solution:50 mL of stock solution were taken and added to flask. Then 50 mL of Di water were added to the flask. This is solution 1. Then 50mL of solution 1 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 2. Then 50mL of solution 2 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 3. Then 50mL of solution 3 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 4. Find the concetrations of each solution. Information of stock solution - molar mass- 534.3g/mole 0.587g in MilliQ
- Differentiate between simple distillation and fractional distillation. Please elaborate.2. You desire a sweeter tasting Kool-Aid. You've already saturated the Kool-Aid with sugar. In order to make it sweeter, you need to increase the solubility of the sugar in the water. You can do this by a. cooling down the water b. heating the water c. stirring the sugar and water more vigorously d. grinding the sugar into a fine powder so more will dissolve‘’Concentrated’’ sulfuric acid solution is 95% sulfuric acid by mass (and the remainder water) and has a density of 1.64 gr/mL. ( Molar mass of H2SO4= 98 gr/mol ) What is the molarity of concentrated sulfuric acid solution? a. 18 M b. 12 M c. 16M d. 9M
- A 5.04 g sample of a solid containing Ni is dissolved in 20.0 mL water. A 5.00 mL aliquot of this solution is diluted to 100.0 mL and analyzed in the lab. The analyzed solution was determined to contain 5.53 ppm Ni. Determine the molar concentration of Ni in the 20.0 mL solution. concentration: M Determine the mass, in grams, of Ni in the original sample. mass: g Determine the weight percent of Ni in the sample. weight percent: % * TOOLS x101. A 0.10 M HNO3 solution will be prepared from concentrated HNO3. a. Using the method outlined in Experiment 5, determine the concentration of a stock bottle of concentrated nitric acid. [density = 1.42 g/mL; 70% by mass HNO3] b. Calculate the volume of concentrated NO3 needed to prepare 500 mL of a 0.10 %3D M solution.1. ASSERTION: The solubility of gases in water follows the order O2 < N2 < SO2 < CO2 < NH3. REASON: For appreciable solubility, the solute-solvent interactions should outweigh the solute-solute and solvent-solvent interactions. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct statement but reason is a wrong statement. d. Assertion is a wrong statement but reason is a correct statement. 2. ASSERTION: The solubility of all gases in water decreases with the rise in temperature. REASON: The dissolution of gases in water is an endothermic process. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct…
- You need to analyze an aqueous alcohol solution in the laboratory. You separated 367 mL of this solution and diluted with 40 mL of water. You then get 50 mL of the resulting solution and mixed with 50 mL 30% v/v aqueous alcohol solution. You analyzed the final solution and found out that it's concentration is 40% v/v alcohol. How much alcohol in mL does the initial solution contains?"Part 3. Solubility. For the following molecules label whether you think it will be more soluble in water (H₂O) or dichloromethane (CH₂Cl₂) at 25 °C. OH НО. О ОН ОН OH OH1-3: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v ethanol. (Density of ethanol = 0.789 g/mL; MW of ethanol = 46 g/mol) 1. Determine the initial volume of 70% v/v ethanol used in the preparation. 2. How much water was added to the stock solution to make 1L of the final concentration? 3. The molarity of 5.0 mL of 70% v/v ethanol was found to be __________. 4-6: A solution contains 45.0 g of methanol, CH3OH, dissolved in sufficient water to give a total mass of 210.6 g. 4. Compute for the number of moles of the solute present in the given solution. 5. What is the mass (in kg) of water used to dissolve the solute from the given problem? 6. Determine the molal concentration of the said solution.