What will be the new boilng point of 297ml benzene (Kb = 2.53 °C.Kg/mol; Bp = 80.1°C) when mixed with 14g of naphthalene (MW = 128.17 g/mol) to make a non- eletrolyte solution? Density of benzene = 0.876 g/ml) Round you answer in 2 decimal places, unit is not required.
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- What will be the new boilng point of 491ml benzene (Kb = 2.53 oC•Kg/mol; Bp = 80.1oC) when mixed with 11g of naphthalene (MW = 128.17 g/mol) to make a non- eletrolyte solution? Density of benzene = 0.876 g/ml) Round you answer in 2 decimal places, unit is not required.What will be the new boilng point of 498ml benzene (Kb = 2.53 oC•Kg/mol; Bp = 80.1oC) when mixed with 18g of naphthalene (MW = 128.17 g/mol) to make a non- eletrolyte solution? Density of benzene = 0.876 g/ml)The solubility of benzoic acid in water is 0.21g per 100mL of water at 10 degrees celsius, 0.27g per 100mL at 18 degrees celsius, and 6.80g per 100mL at 95 degrees celsius. A. At least how much water would be needed to dissolve a 2.00g sample of benzoic acid at 95 degrees celsius? B. If you carried out a recrystallization by dissolving your 2.00g sample in water at 95 degrees celsius, then cooling it to 18 degrees celsius, what would be the maximum yield of benzoic acid? How would the yield be affected if the recrystallization mixture was cooled to 10 degrees celsius instead?
- Part II. Determination of molecular weight for ethyl alcohol Freezing point, °C DTf Mass of solute, g mass of solvent, kg Calculated molecular weight, g/mol -2.30 0C ΔTf = T0f – Tf 0.0 °C -(-2.30 °C) = 2.30 0C 6.202 g 0.1kg Click or tap here to enter text.Given A solution of: SOLVENT: Water (H2O) - 100mL or 100.00g SOLUTE: Salt (NaCl) - 11.60g What is the boiling point (in degrees Celsius) of the SOLVENT used in the experiment? https://www.chem.purdue.edu/gchelp/solutions/eboil.html Note: Answers must be numeric, not alphanumeric—42, not forty-two.What will be the new vapor pressure of the water in a 250 mL solution of 5 grams CaSO4 (MW= 136.14 g/mol) with a density of 1.15 g/ml? The Vapor pressure of water ins 23.8 mmHg at 25oC. answer in 2 decimal places no need to write the unit
- The amount of urea in ppm [parts per million] present in an aqueous solution containing 45 % by mass of solvent is ______ 8.18 X 10 to the power of 5 space end exponent p p m 1.22 X 10 to the power of 6 space end exponent p p m 4.50 X 10 to the power of 5 space end exponent p p m 5.50 X 10 to the power of 5 space end exponent p p mbeer - 4.50% (v/v) of ethanol soju - 24.0% (v/v) of ethanol 500.00mL of beer was mixed with 200.00mL of soju and 50.00mL cola was also mixed 1. What is the final concentration (%w/v) of ethanol in the mixture 2. How much of mixture must a person take all at once so the ethanol ingested is 25.0mL? Answer must also be in mLI just want to be sure if my answers (and units) are correct: 1. What is the molarity of a 750 mL solution that contains 10.0 grams of Silver Nitrate, AgNO3? 0.08 M 2. To what volume should 5.5 g of KCl be diluted to prepare a 0.25 M solution? 0.28 L 3. Calculate the % by mass of 2 g sucrose in 80 g water. 2.44 % Sucrose 4. Determine the v/v percent solution made by combining 25 mL of ethanol with enough water to produce 200 mL of the solution. 12.5 % Ethanol 5. How many moles of NaCl are present in 600 mL of a 1.55 M NaCl solution? 0.93 moles of NaCl 6. How many grams of Ca (OH)2 are needed to produce 500 mL of 1.66 M Ca (OH)2 solution? 61.49 g of Ca(OH)2
- Calculate freezing temperature Tf and the boiling temperature Tb of a solution formed by mixing 15.6g of magnesium chloride, strong electrolyte with 155g of acetic acid, freezing point in 17.0 Celsius and boiling point of 118 Celsius. the Kf and Kb for the solvent are 3.90 Celsius/m and 3.07 Clesius/m respectively Explain in a paragraph your reasoning of your answerSove for the (F) freezing point of urea and (G) Percent Error. Given: A. Weight of urea = 2g B. Weight of water = 8 g C. Freezing point of ice = 0°C D. Freezing point of urea solution = -8.0°C E. Molecular weight of urea = 60 g/mole F. Freezing point of urea = ? G. Percent Error = ?What is the boiling point in Celsius of a solution containing 35.9g of h2O and 490.5g ethanol. molal depression ethanol = 1.22C Ethanol pure boiling = 78.4 Answer to 1 decimal place