Caffeine is a stimulant found in tea and coffee. A sample of Caffeine was dissolved in 45.0 g of Chloroform CHCl3, to give a 0.0946 m solution. How many grams of caffeine were in the sample? (Molar mass of Caffeine = 194.2 g/mol, Molar mass of Chloroform = 119.4 g/mol)

Q: An aqueous solution of ethanol (MM = 46.07 g/mol) has a molality of 14.83 m and a density of 1.100…

A: By given values and interpretation of data solution is given as follows. hope is helps

Q: What is the molality of a solution made by dissolving 12.3 grams of LiCl in 380 grams of water?…

A: Given: Mass of LiCl = 12.3 g. And mass of water i.e. solvent = 380 g = 0.380 Kg…

Q: What is the molality of a solution made by dissolving 47.6 grams of Cr(NO 3) 3 in 795 grams of…

A: Given :-  Mass of Cr(NO3)3 = 47.6 g  Mass of water = 795 g Or 0.795 kg To calculate :-  Molality of…

Q: A 250. mL aqueous solution prepared by dissolving 55.0 g of a non-electrolyte solute had a freezing…

A: Depression in freezing point describes that the freezing point of a liquid (a solvent) is epressed…

Q: The concentration of a NaCl solution is 25.0% (%w/v). What volume (mL) of this solution contains…

A:

Q: The boiling point of chloroform, CHC13, is 61.700 °C at 1 atmosphere. K(chloroform) = 3.67 °C/m In a…

A: Elivation in boiling point  ∆Tb = i x Kb  x m where ∆Tb = Ts - To i = 1 ( non electrolyte solute)m…

Q: 5) Antifreeze is composed mainly of ethylene glycol (C2H6O2, d = 1.11 g/cm3). It is added to a car…

A:

Q: 100 90 NANO, 80 70 60 CaCl 50 Pb(NO½ 40 NaCl 30 KCI 20 KCIO, 10 Ce»(SO,)} 10 20 30 40 50 60 70 80 90…

A: At 10°C least soluble is KClO3.  At 40°C least soluble is Ce2(SO4)3.

Q: [References) Use the References to access important values if needed for this question. The freezing…

A:

Q: An aqueous solution of AlF3 (molar mass=84.0 g/mole) has a molarity of 0.750 M and a density of 1.04…

A: The mass of the solvent in kg is determined as follows.…

Q: A patient has a “cholesterol count” of 214. Like manyblood-chemistry measurements, this result is…

A: Molar concentration is the representation of explaining the concentration of solute in a solution.…

Q: 21. What is the molality of a solution prepared by dissolving 0.244 mol of chloroform, CHC13, in 456…

A:

Q: Mass of test tube, beaker and cyclohexane = 100.17 g Mass of test tube and beaker = 84.07 g Freezing…

A: Depression in freezing point is the drop in the freezing point of a substance due to addition of any…

Q: What is the molality of a 1.10 M NaF solution with a density of 1.23 g/mL?     1.10 m      5.85…

A: The mole of solute present in one kilogram of the solvent is known as molality. The mole of solute…

Q: What is the molality of a solution made by dissolving 23.9 grams of LiI in 260 grams of water?…

A:

Q: What is the molality of a solution when 12 g of NH 3 (17.031 g/mol) is dissolved in 250 g water?…

A:

Q: A 50.0-mL solution is initially 1.55% MgCl2 by mass and has a density of 1.05 g>mL. What is the…

A:

Q: Use the References to access important values if needed for this question. The common laboratory…

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Q: In an experiment analyzing a hand sanitizer at 20 degrees celsius, the density of ethanol,…

A: Here we are required to find the density of an ideal solution containing 62.00% by mass of ethanol…

Q: Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its…

A: Lowering in freezing point of a solution is:

Q: A Vitamin C packet is added to a glass of water containing 500.0 mL of solution. The Vitamin C…

A: We have to predict the concentration in ppm.

Q: A student dissolves 11. g of aniline (C,H,NH,) in 250. mL of a solvent with a density of 1.12 g/mL.…

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution and…

Q: 1 3. 7 8 A student dissolves 13. g of phenol (CH,OH) in 300. mL of a solvent with a density of 0.93…

A: Known Weight of phenol = 13.0 g Volume of a solvent = 300 mL Density of solvent = 0.93 g/mL Since…

Q: mixed with 125 g of water what is the molality of the solution? 444 m 1.20 m

A: Mass of solute = 55.5 g Molar mass of ethanol = 46 g/mol Moles of ethanol = mass/MM    = 55.5/46 =…

Q: A 1.50 M solution of CaCl 2 (MM=109.9 g/mol)in water has a density of 1.11 g/mL. What is the…

A: Molality is defined as number of moles of solute present in 1 kg of solvent.

Q: A student dissolves 19. g of benzoic acid (C,H,O2) in 475. mL of a solvent with a density of 1.06…

A: The solute is 19g benzoic acid The solvent is 475ml solvent The density of solvent = 1.06g/ml

Q: The normal boiling point of pure benzene, C6H6, is found to be 80.10 C. What is the approximate…

A: Numerically can be calculated based on one of the colligative properties elevation in boiling point.…

Q: 5.00 g of solid Al(NO3)3 was added to enough water to make a solution with a total volume of 100.0…

A: Molarity (M) :-  The number of moes of solute dissolved in one litre of solution is known as…

Q: 1. When making pasta, people often add salt to the boiling water before adding the pasta. Assume…

A:

Q: 6. Which statement regarding units of concentration is CORRECT? A. Molarity and Molality follow the…

A: The question is based on the concept of solutions. we have to identify the correct statement out of…

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

A:

Q: acid, CH3COOH, is 1.0187 g/mL. What is (a) the molarity? (b) the molality? (c) the mole fraction of…

A: Molarity is the moles of solute in 1 L of solution. Molarity=moles of solutevolume of solution (L)…

Q: A solute is a minor component of a solution. For example, if a small amount of benzoic acid is…

A: The term solubility is a chemical property which depicts the ability of a given solute or substance…

Q: he freezing point of benzene, C6H6, is 5.500 °C at 1 atmosphere. Kbenzene) = -5.12 °C/m a laboratory…

A: The question is based on the concept of solutions.   Molality is a method of expressing…

Q: 6. How many grams of Na CO; must be dissolved in 40mL of solution that is exactly 2.45 M? What would…

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Q: Calculate the molality of 72.0 grams of ethylene glycol C2H6O2 in 304.6 g of water

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Q: An aqueous solution of methanol (MM = 32.04 g/mol) has a molality of 3.21 m and a density of 1.15…

A: Please find the attachment.

Q: A solution is made using 121.8 mL of acetonitrile (density 0.7766 g/mL) and 250.0 mL of water…

A: From the Formula of Molarity we can solve this problem.

Q: A student dissolves 17. g of sucrose (C,H„01) in 250. mL of a solvent with a density of 1.04 g/mL.…

A:

Q: Assume that each of the ions in calcium chloride, CaCl2, has the same effect on the freezing point…

A: Solution is made up of two components which are solute and solvent. Solute is present in the minor…

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

A: Given, In a laboratory experiment, students synthesized a new compound and found that when 13.34…

Q: A student dissolves 8.9 g of methanol (CH,OH) in 175. mL of a solvent with a density of 0.88 g/mL.…

A: given mass of methanol = 8.9 g volume of solution = 175 ml density of solution = 0.88 g/mol

Q: A student dissolves 20. g of benzoic acid (C,H,0,) in 125. mL of a solvent with a density of 1.07…

A: The mass of benzoic acid, the solute is = 20. g The volume of solvent and solution is = 125. mL The…

Q: Calculate the normality of the solution obtained by dissolving 0.321 g of the salt sodium carbonate…

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Q: Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its…

A:

Q: The boiling point of chloroform, CHCI,, is 61.700 °C at 1 atmosphere. K(chloroform) = 3.67 °C/m In a…

A:

Q: 100 90 NANO 80 70 60 CaCl 50 Pb(NO)2 40 NaCl KCI 30 20 KCIO, 10 Ce,(SO) 0 10 20 30 40 50 60 70 80 90…

A:

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.