magnesium chloride is an important coagulant used in the preparation of tofu from soy milk. Its solubility in water at 20°C is 54.6g/100g. At 80°C, its solubility is 66.1g/100g, a mixture is made up of 16.2g of magnesium chloride and 38.2 g of water at 20°C. How many more grams of magnesium chloride are needed to make a saturated solution at 80°C?

Q: Which solution has a higher vapor pressure at 25 degress Celsius: 20.0g of glucose in 100.0mL of…

A: Given information: 20.0g of glucose in 100.0mL of water 2.0g of sucrose in 100.0mL of water Density…

Q: For a general chemistry 2 lab, an aqueous solution of a soluble compound (a nonelectrolyte) is…

A: 34.7 g of a compound is dissolved in sufficient water to form 0.267 L of solution. The solution…

Q: At what temperature is each of the following solutions -saturated? (Refer to Figure 13.5.) (a) 40 g…

A: Saturated solutions are those where the maximum amount of solute is dissolved.

Q: 13. What is the molality of a solution when 12 g of NH3 (17.031 g/mol) is dissolved in 250 g water?…

A: Molality (m) : Number of moles of solute (n) present in 1Kg of solvent (W) is called molality (m)…

Q: Consider two glucose-in-water solutions. 1 g of glucose in 100 mL water equals one solution. The…

A: We know that : osmotic pressure (π) = CRT  This means osmotic pressure is directly proportional to…

Q: A solution contains 6.45 × 10-2 g of a compound in 8.21 g of ethanol. The molality of the solution…

A: Since moles = mass / molecular weight hence moles of compound = 6.45 X 10-2 / molecular weight of…

Q: A solution is made by dissolving 2.5 mg sodium fluoride (NaF) in 4.5 L of water at 20.0°C. What is…

A: Given: Mass of NaF = 2.5 mg = 0.0025 g                                      (Since 1 g = 1000 mg)…

Q: An aqueous solution of 7.700 g of catalase, an enzyme found in the liver, has a volume of 1.00 Lat…

A:

Q: The maximum solubility of salicylic acid in pure ethanol is 0.370 g/mL. The molal boiling…

A: The objective of this question is to find the maximum temperature change for a solution of salicylic…

Q: What is the osmotic pressure of a 0.431 M solution of sodium phosphate (Na₃PO₄) in water at a…

A: Osmotic pressure is the pressure developed on th solution surface due to solute and the vapour…

Q: 5.152g of Na2CO3(s) is added to 75.0mL of water at 21.20°C. When the dissolution is complete, the…

A: Molarity of the solution can be calculated by using Following formula - Molarity = mass×1000/molar…

Q: Two beakers are placed in a small closed container at 25 °C. One contains 444 ml of a 0.129 M…

A: Saturated solution is a type of solution that has a solute concentration equivalent to its limit of…

Q: A beverage contains tartaric acid, H2C4H4O6, a substance obtained from grapes during wine making. If…

A:

Q: Highways are salted to reduce ice on roads. What is the freezing point when 2 samples of 125 g NaCl…

A: When a non-volatile solute is added to a solvent, the freezing point of a solvent decreases and this…

Q: At 25.0 °C, 100.0 mL of an aqueous solution containing 67.8 mg of a molecular solute has an osmotic…

A:

Q: . What is the osmotic pressure of a solution if 1.50 grams of BaCl₂ has been mixed in a 200mL of…

A:

Q: How much potassium nitrate (KNO3) will you have to add to 100 g of water at 40°C to make a saturated…

A: Answer

Q: What is the molality of a solution

A: Molality = number of moles of solute/mass of solvent in kilogram  Number of moles = mass/molar mass

Q: solution was made by dissolving  5.10 mg of hemoglobin in water to give a final volume of 1.00…

A: According to the question, we need to calculate the molecular mass of hemoglobin using the osmotic…

Q: The density of an aqueous solution containing 15.0 percent ethanol (C₂H5OH) by mass is 0.979- your…

A: Given :  Mass percentage of ethanol = 15.0 ℅  Density of solution = 0.979 g/ml

Q: The graph below shows how the solubilities of various substances respond to changes in temperature.…

A: Saturated solution is that solution which has maximum amount of salt dissolved in it.

Q: A solution contains 6.75 x 10-2 g of a compound in 8.35 g of ethanol. The molality of the solution…

A: Molality (m) of a solution is defined as the number of moles of solute per kg of the solvent. Thus,…

Q: at a particular temperature the solubility of co2 in water is 0.13 m when the partial pressure is…

A: Henry law: This law states that the concentration of a gas dissolved in a liquid depends on the…

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 of sodium chloride in water has a vapor pressure of 19.6 torr at 25°C. What is the mole…

A:

Q: When 258. g of alanine (C,H,NO,) are dissolved in 850. g of a certain mystery liquid X, the freezing…

A: Recall the following relation for depression of freezing point of a solution…

Q: A student dissolves 14. g of stilbene (CH12) in 450. mL of a solvent with a density of 1.09 g/mL.…

A: Molarity: The mole of the solute dissolved in one liter of the solution is known as the molarity of…

Q: At a particular temperature, the solubility of CO₂ in water is 0.13 M when the partial pressure is…

A: At a particular temperature, the solubility of CO2 in water is 0.13M  Partial pressure is 1.5atm…

Q: At 50°C , which solution is the least soluble in 100g of water?

A: Answer

Q: A solution of 4.85 g of a carbohydrate in 100.0 g of water has a density of 1.017 g/mL and an…

A: Mass of carbohydrate (Solute)=4.85 g  Mass of solvent (water)=100.0 g Mass of solution =4.85 + 100.0…

Q: When 361. g of urea (CH₂N₂O) are dissolved in 1350. g of a certain mystery liquid X, the freezing…

A: According to Raoult's law, the depression in the freezing point of a solution:Here, i = van't Hoff…

Q: In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves a 6.053…

A: Given  mass of solute = 6.053 g  volume of solution = 200 mL = 0.2 L  Temperature = 25o C = 298 K…

Q: You work for a pickling company and have been tasked with creating a litre of brine (saturated…

A: The objective of this question is to stable liter of saturated sodium chloride solution that can…

Q: Ethyl propanoate is an organic molecule that smells like pineapple and has a molar mass of 102.132…

A: The molality of a solution is the number of moles of solute dissolved per kg of the solvent.

Q: g A certain organic compound O has a solubility in acetonitrile of 19.6- ³/ at 10. °C. Calculate the…

A: Density or solubility in acetonitrile(d) = 19.6 g/LVolume(V) = 8.0 Lmass(m) =?

Q: Calculate the van't Hoff factor for iron(III) chloride

A: Since, nitrobenzene C2H5NO2 is non electrolyte it will be having vantoff factor 1  Now  Since mass…

Q: At 20°C, a 2.89 M aqueous solution of ammonium chloride has a density of 1.004 g/mL. What is the…

A: The mole of solute present in a one-liter solution is known as the molarity of the solution. The…

Q: At 25.0°C, 100.0 mL of aqueous sol containing 45.2 mg of a molecular solute has an osmotic pressure…

A:

Q: 3. If a solution is made up by mixing 6.0 g of benzoic acid in 1.00 L of water at 42 °C, would the…

A: In this question we have to define the saturated Solution of the benzoic acid and water, first of…

Q: The solubility of a gas increases in direct proportion to its partial pressure above the solution…

A: Henry's Law state that With increasing the partial pressure of the gas, solubility increases.

Q: If the freezing point of the solution was observed to be -8.6 °C, and the normal freezing point of…

A: Given: Freezing point of solution = -8.6 oC The freezing point of pure solvent i.e. cyclohexane=…

Q: A student dissolves 1.3 g of resveratrol (C₁4H₁203) in 275. mL of a solvent with a density of 1.18…

A: Answer: Molar concentration of solution is always equal to the ratio of number of moles and volume…

Q: At 25.0 °C, 100.0 mL of an aqueous solution containing 45.2 mg of a molecular solute has an osmotic…

A: we will use osmotic pressure formula

Q: molarity molality

A:

Q: Calculate the molar mass of the compound.

A:

Q: At a particular temperature, the solubility of CO₂ in water is 0.13 M when the partial pressure is…

A: Partial pressure of a gas in a gas mixture indicates the individual gas pressure in the mixture. The…

Q: A pharmacist mixes together 20g of crystals of compound A and 10g of crystals of compound B. The…

A: The prominent size of crystals is 0.1-0.4 mm. To dissolve the crystals, the solution must be heated…

Q: A 300.0 mL aqueous solution containing 0.512 g of an unknown polymer has an osmotic pressure of 32.9…

A: Volume of solution =300.0 ml = 0.300 Litre Mass of unknown polymer = 0.512 g  Osmotic pressure =…

Q: Omotic Pressure is a technique used to find the length of a polymer using its Molar Mass. If a 32.25…

A: We have given that  If a 32.25 mg sample of PVC (polyvinyl chloride) is dissolved in benzene to…

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.