what is the molality of a solution containing 0.75 moles of sodium hydroxide in 500 mL of water at 25 degrees celsius? The density of water at 25 degrees celsius is 1 g/ml.

Q: Determine the molal concentration of a sugar solution in water that has a freezing point of –2.1°C.…

A: Given information,    Freezing point = –2.1°C    Value of Kf = 1.86°C/m for water

Q: What is the molality of a solution consisting of 2.66 mL of carbon tetrachloride (CCl4; d = 1.59…

A: The given data contains, Volume of CCl4 = 2.66 ml. density = 1.59 g/ml. Volume of CH2Cl2 = 76.5 ml.…

Q: The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using…

A: Pure benzene (solvent) freezing point = Tp = 5.49 °C Freezing point of Solution = Ts = -13.0 °C Kf…

Q: The density of pure acetic acid is 1.05 g/mL. If a 1.80 molal solution of NaCl-acetic acid was…

A: Molality(m) of a solution is defined as the number of moles of solute present in the 1 kilogram of…

Q: A solution made by dissolving 3.46 g of an unknown compound in 85.0 g of benzene froze at 4.13 °C.…

A:

Q: A solution made by dissolving 150.0 g of an unknown compound in 370.0 mL of benzene to make a…

A: An unknown compound is dissolved in the benzene to make a solution. The mass of the unknown…

Q: Aqueous solutions of propylene glycol (C3H8O2) are often used as antifreeze solutions for several…

A: Step 1: The weight percentage (%m/m) or mass percent of a component in a solution is defined as the…

Q: A student dissolves 7.9 g of resveratrol (C4H120,) in 425. mL of a solvent with a density of 0.90…

A: First we will calculate number of moles of resveratrol. Then calculate molarity and molality of…

Q: 1. The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using…

A: Given that freezing point of pure benzene (C₆H₆) is 5.49 °C The freezing point of a solution = -13.0…

Q: A student dissolves 13. g of aniline (C6H5NH₂) in 175. mL of a solvent with a density of 0.89 g/mL.…

A:

Q: What is the boiling point of an aqueous solution of a nonelectrolyte that has an osmotic pressure of…

A: The objective of this question is to find the boiling point of an aqueous solution of a…

Q: A student prepares a solution containing 45.4 grams of sucrose (C12H22011, 342.29 g/mol) in 250. g…

A:

Q: 409. mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The…

A: Given :-  Mass of protein = 409. mg = 0.409 g Volume of solution = 5.00 mL = 0.005 L Temperature =…

Q: A 3.40-g sample of a mixture of naphthalene (C₁₀H₈) and pyrene (C₁₆H₁₀) is dissolved in 35.0 g…

A: Molar Mass of napthalene (C10H8) = 128 g/mol Molar mass of pyrene (C16H10) = 202 g/mol Mass of…

Q: An aqueous solution containing 6.17 g of a certain non-electrolyte has a volume of 530 mL. The…

A:

Q: Ethylene glycol, CH2 (OH) CH2 (OH) is a widely used automobile antifreeze. This substance is soluble…

A: Depression in freezing point and elevation of the boiling point of a solution depends on the amount…

Q: 2.A solution that contains 12.6 g of a nonvolatile nondissociating solute in 400. g of benzene…

A:

Q: A student dissolves 19. g of glucose (C6H₁206) in 350. mL of a solvent with a density of 0.98 g/mL.…

A: Mass of solute (glucose) = 19. gDensity = 0.98 g/mLVolume of solvent = 350. mL = 0.35 LMolarity =…

Q: 1. A solution contains 15.37 grams of NaCl in 0.621 kg water at 25 °C. What is the vapor pressure of…

A: 1. A solution contains 15.37 grams of NaCl in 0.621 kg water at 25 °C. We have to calculate the…

Q: The common laboratory solvent ethanol is often used to purify substances dissolved in it. The vapor…

A:

Q: What mass of insulin must be dissolved in 43.0 mL of water to produce a solution with an osmotic…

A: Given, Osmotic pressure (π) = 13.7 mmHg = 0.018 atm Volume (V) = 43.0 mL = 0.043 L Temperature (T) =…

Q: 10. What is the osmotic pressure at 25.0 °C of an isotonic saline solution that contains 0.900 g…

A: Given mass of NaCl = 0.900 g  Gram molar mass of NaCl = 58.44 g/mol  Temperature  T = 25 0C = 273 +…

Q: A 3.40-g sample of a mixture of naphthalene (C₁₀H₈) and pyrene (C₁₆H₁₀) is dissolved in 35.0 g…

A: Assuming mass of naphthalene in the mixture is y. Hence mass of pyrene = mass of mixture - mass of…

Q: A solution is prepared by dissolving 215 g of methanol, CH3OH, in 1000 mL of water. What is the…

A: To solve this problem first we have to find the number of moles of methanol  then molality of the…

Q: When 3.14 g of a nonelectrolyte solute is dissolved in water to make 325 mL of solution at 22 °C,…

A: Given ,  Mass of non electrolyte (w) = 3.14 g Volume of solution (V) = 325 mL = 0.325 L Temperature…

Q: A 0.608 g sample of a protein was dissolved in 25.00 mL of water and the resulting osmotic pressure…

A: Ans : Mass of protien sample, (w) = 0.608g Volume of solution, (v) = 25.00ml = 0.025l Temperature,…

Q: A 3.40-g sample of a mixture of naphthalene (C10H8) and pyrene (C16H10) is dissolved in 35.0 g…

A:

Q: A solution is made by dissolving 4.35 g of glucose 1C6H12O62 in 25.0 mL of water at 25 °C. Calculate…

A: Molality of the solution is equal to number of moles of solute present in one kilogram of solvent.…

Q: Pepsin is an enzyme involved in the process of digestion. Its molar mass is about 3.50 x 10 g/mol.…

A: Given: Mass of sample of pepsin = 0.150 g Volume of pepsin solution = 40 mL = 0.040 L Molar mass of…

Q: What is the molality (mol/kg) of a solution prepared by dissolving 34 g of Calcium Chloride (CaCl2)…

A: Given: Weight of solute=34 g. Molecular weight =110.98 g/mol. The volume of solution=250 mL. Formula…

Q: A 70% sulfuric acid solution has a density of 1.326 g/cm3.  Find the molarity of the solution in…

A:

Q: what is the molality of a solution in which 55g pf sucrose are dissolved in 950 mL of water?

A: Molarity is the ratio of moles of substance to a kilogram of the solvent. Molality(m)=Moles of…

Q: A student dissolves 5.6 g of biphenyl (C,,H10) in 425. mL of a solvent with a density of 1.15 g/mL.…

A:

Q: Determine the vapor pressure of a solution at 25 degrees Celsius that contains 76.6 g of glucose in…

A: The molar mass of water is 18 g/mol and the molar mass of glucose is 180 g/mol.  The 250 mL of water…

Q: At 17 °C, a solid substance has a solubility of 58 g per 100 mL of water. A solution of this solid…

A: The solubility product of salt is a constant at a given temperature irrespective of the source from…

Q: A solution containing 0.80 g of a protein in 100 mL of a solution has an osmotic pressure of 2.06…

A: The osmotic pressure is expressed as:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.