Vitamin B2, riboflavin, is soluble in water. If 0.833 g of riboflavin is dissolved in 18.1 g H2O, the resulting solution has a freezing point of -0.227o Kb = 1.86oC/m What is the molar mass of riboflavin? What is the molecular formula of riboflavin if combustion analysis shows it to consist of 54.25% C, 5.36% H, 25.5% O and 89%N?

Q: What is the molality of 50.0 grams of KBr compound dissolved in 900.0 mL water.

A: We have to find the number of moles of KBr. As , Molality = Moles of soluteMass of the solvent (in…

Q: Calculate the molality of chloride ions in an aqueous solution of magnesium chloride in which the…

A: To solve this problem we will use the formula of molality

Q: This question is part one of three. When answering this problem, report the answer with the…

A: Colligative properties are dependent on the number of moles of solute in the solution. There are…

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: When a 5.64 g sample of a non-electrolyte was dissolved in 40.0 g of water, the freezing point of…

A: Molality of the solution can be calculated as follows:

Q: You are provided with a vial of an hypothetical solid that is non-volatile and a non-electrolyte.…

A:

Q: A solution of phosphoric acid, H3PO4, was made by dissolving 10.0 g of the acid in 100.0 ml of…

A:

Q: 29 g of KOH is dissolved in 250. mL of water. What is the mass percent of KOH in this solution?…

A: Hence you posted multiple choice questions, I will answer the first three sub questions. (1) mass of…

Q: Two beakers are placed in a small closed container at 25 °C. One contains 226 mL of a 0.255 M…

A: The objective of the question is to calculate the final volume and the concentration.

Q: What mass of NaNO3 should be dissolved in 45 mL of water so that the resulting solution freezes to…

A:

Q: Consider the solubilities of a particular solute at two different temperatures. Temperature ("C)…

A: Solubility is defined as mass of solute that could be dissolved in a solvent at a particular…

Q: Calculate the mass percent of a NaClNaCl solution in which 108 gg of NaClNaCl is dissolved in 4.72…

A:

Q: 132 g of 0.445 m KCl Express your answer using three significant figures. msolute = VE ΑΣΦ Submit…

A: mass of solution = 132 gmolality = 0.445 mmass of KCl =?

Q: The freezing point of acetic acid is 17.0 °C, and its Kf is 3.90 °C·kg/mol.  If dissolving an amount…

A: In this question, we want to determine the moles of solute in the Solution. You can see details…

Q: What mass (in grams) of potassium hydrogen phthalate (KHP) would you need to make 250.0 mL of a…

A: Molarity :- It is the number of moles of the solute dissolved per liter of the solution. It is…

Q: What is the molality of a solution of 2.50 g sodium phosphate dissolved in 230g water?

A: Moles of solute ( Na3PO4 ) = 2.50164=0.015244 mol  Mass of solvent ( water ) = 230 g = 0.230 kg…

Q: A solution is prepared by combining 5.24 grams of an unknown non-electrolyte with 291.0 grams of…

A:

Q: A student dissolves 19. g of biphenyl (C12H10) in 425. mL of a solvent with a density of 1.12 g/mL.…

A:

Q: When 1.504 g of a solute is dissolved in 5.012 g of solvent (benzene), the solution freezes at -7.05…

A: Given: Mass of solute = 1.504 g Mass of solvent (Benzene) =5.012 g Freezing point of the solution…

Q: calculate the mass of QCl2 that can be dissolved in 873.3 mL of solution. The molar mass QCl2 is…

A: The number of moles of a substance is determined as the mass of substance given upon its molar mass.…

Q: (a) Differentiate between molarity and molality in a solution. What is the effect of temperature…

A: a) The molarity is the concentration term that can be expressed as the mathematical ratio between…

Q: A solution was prepared by dissolving solute T in 120 g benzene. The freezing point of this solution…

A: Given : Mass of solvent i.e benzene = 120 g = 0.120 Kg                                     (since 1…

Q: A beverage contains tartaric acid, H2C,H,O6 , a substance obtained from grapes during wine making.…

A: The molality is equal to the ratio of the number of moles of solute to the mass of solvent in kg. It…

Q: Two beakers are placed in a small closed container at 25 °C. One contains 256 mL of a 0.273 M…

A:

Q: An ethylene glycol solution contains 27.8 g of ethylene glycol (CH,O2) in 79.2 mL of water (density…

A:

Q: study is the effect on osmotic pressure. (A) When 0.517 g of the compound are dissolved in enough…

A: Mass of compound = 0.517 gVolume of solution= 50 mL Osmotic Pressure= 4.18 atm Temperature= 23 °C We…

Q: the density of a 3.539 M HNO3 aqueous solution is 1.150 g x mL-1 at 20 Degrees C. What is the molar…

A: Given Molarity = 3.539 M Density = 1.15 g/ml

Q: Your favorite household cleaner is a 30% aqueous solution of ammonia (NH3) by volume. The typical…

A: M = (1000 ×w)/(MM × V)Where, M = molarity; w = mass of NH3 in g; MM = molar mass of NH3; V = volume…

Q: was made by dissolving 479.32 g or aluminum AIC13) in enough water to make 500.0 solution. The…

A:

Q: The solubility of solid X is given below. What is the maximum percent recovery if a student wanted…

A: NOTE: Assuming that the initial temperature is 100 oC and the final temperature is 0 oC as per 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 KCl in water has Xkcl= .0700. What is the molality?

A: A KCl solution consists of KCl salt as the solute and water as the solvent. Mole fraction of any…

Q: The freezing point of ethanol, CH3CH₂OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m In…

A:

Q: 4. s) What is the molar mass of the solute in a solution composed of 255.0 g of a non-volatile, non-…

A: Depression in boiling point ( ΔTb ) is given by,  ΔTb  = Kb × i × m   Kb  =  Boiling point constant…

Q: When 4.13 g of a certain molecular compound X are dissolved in 35. g of cyclohexane (C6H₁2), the…

A:

Q: What is the mass percent of Na₂SO4 in a solution made by dissolving 16.0 g Na2SO4 in 232.0 g H₂O? %…

A: The mass of solute  = 16.0 gThe mass of solvent  = 232.0 gThe mass percent of  = ?

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: The solubility of nitrogen in water at 0ºC and 1 atm pressure is 23.54 mL of N2/L.>At what…

A: The objective of the question is to find the pressure required to increase the solubility of…

Q: When 0.52 g of an unknown nonelectrolyte are dissolved in 35.0 g cyclohexane, the freezing point of…

A: Given data: The mass of unknown nonelectrolyte m=0.52 g. The mass of cyclohexane=35.0 g=0.035 kg.…

Q: Camphor is a white solid that melts at 179.50°C. It has been used to determine the molecular weights…

A: given mass of unknown compound (solute) = 1.08 g Kf  = 39.7°C/m Mass of solvent = 73.6 g = 73.6×10-3…

Q: 240 220 200 NaCIO3 180 4KNO3 160 140 KBr 120 100 NaCI 20 40 100 120 Temperature (°C) Solubility…

A: Solubility is defined as the amount of a substance dissolved per 100 g of a solvent at a particular…

Q: If a 24 g sample of a nonelectrolyte is dissolved in 156 g of water, the resulting solution will…

A:

Q: Solutions of hydrogen in palladium may be formed by exposing Pd metal to H₂ gas. The concentration…

A: Given - mass of hydrogen gas = 0.85g              Mass of palladium = 197 g              Density of…

Q: What is the osmotic pressure of a solution at 22.5 oC when 3.5462 g of CoCl 2 (MM = 129.839 g/mol)…

A:

Q: What is the molality of a solution made by dissolving 25.9 grams of CaCl 2 in 625 grams of water?…

A: Molality(M)=Number of moles of solute/Mass of solvent in kgs that is molality means how many moles…

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.