How does the process of preparing an aqueous solution of known concentration from a stock solution differ from preparing one from pure solid solute?

Q: Sodium nitrate nano3 weighing 50g was dissolved in water weighing 150 grams. What is the mass…

A: The mass of sodium nitrate is = 50 g The mass of water is = 150 g The mass fraction of sodium…

Q: When planes fly in cold weather, the planes need to be de-iced before liftoff. Why is that done?…

A: Answer - According  to the question - planes fly in cold weather, the planes need to be de-iced…

Q: The solubility of an unknown sample was determined. A volume of 20 mL of filtered supersaturated…

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Q: What is the concentration of a solution prepared by diluting 1550 ml of 1.55 M salt solution to 5000…

A: Using law of chemical equivalence . N1V1  = N2V2

Q: What is the molarity of a solution in which 150g of CaO are dissolved in 1900mL of solution? (Use…

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Q: Match each term to the appropriate definition   homogeneous mixture: solute: solvent: saturated:…

A: Homogeneous mixture: It can be defined as the a solution which is a mixture of two or more compounds…

Q: Assuming that its density is 1.000g/mL, what is the mass % concentration of a 0.1432M AgNO3 solution

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Q: This is normally prepared by increasing the temperature of the solvent to allow the dissolution of…

A: This is normally prepared by increasing the temperature of the solvent to allow the dissolution of…

Q: Which solution is most concentrated? O 0.4 mole of solute dissolve in 100mL of solvent O 0.3 mole of…

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Q: Calculate the molality of a solution containing 0.125 mol of a non-electrolyte solute dissolved in…

A: The molality is used to represent the concentration of solute present in a given solvent. Molality…

Q: What will be the new freezing point of  water  in a 256 mL of 0.61 M NaNO3 (MW = 84.99 g/mol)…

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Q: Mention the difference in concentration in relation to the amount of solute with respect to the…

A: We know that the solution is made by adding solute in solvent in a fixed or unfixed proportion. If…

Q: A student dissolves 14.6 g of ammonium chloride (NH,CI) in 250. g of water in a well-insulated open…

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Q: the molarity of cl- in an aquoues solution which was %w/v 5.85% naCl , 11.1% cacl2 and 5.35% nh4cl…

A: Given,  %w/v of NaCl = 5.85%  %w/v of CaCl2 = 11.1% %w/v of NH4Cl = 5.35% What is the molarity of…

Q: In a closed system (a closed round-bottom flask), does molarity change with temperature? Why or why…

A: Molarity of any gas is defined as the

Q: Define conductivity and molar conductivity for the solution of an electrolyte. Discuss their…

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Q: What is a marine calcifier and what are the effects of acidification on marine calcifiers?

A: Marine calcier : Biodiversity in ocean eco-system, is quite large. Starting from a very small…

Q: Determine the molality of LiBr if 9.6141 g of LiBr was dissolved in 284.65 g of H2O. MW(LiBr) =…

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Q: using the theory of completely soluble distinguish between substitution and interstitial solid…

A: Solid solutions  are the  formed by mixing a second element (either impurity or solute) to a…

Q: Based on the concept of distribution coefficient, a solute that is soluble with two immiscible…

A: Partition coefficient (P) or distribution coefficient (D) is the ratio of concentrations of a…

Q: 21. True/False: Recrystallization from a supersaturated solution is very slow. 22. Define the…

A: Supersaturated solution : A supersaturated solution is a solution which contains more than maximum…

Q: How Define Primary substance in Solution Preparation (Solid State)

A: Primary standard substance is a reagent that is very pure, representative of the number of moles the…

Q: The molal freezing point constant for copper is 23 °C/m. If pure copper melts at 1083°C, what will…

A: Brass is made up of 33.1 mass percent Zn and remaining Cu. This means that 33.1 g is Zn and…

Q: prepare calcium sulfate soultion by dissolving 200 g calcium sulfate in enough water to sa volume of…

A: From given data  Mass of solute, calcium sulfate = 200 g = 0.200 Kg volume of solution = 850 mL…

Q: Explain why the lower vapor pressure for a solution containing a nonvolatile solute results in a…

A: The temperature at which the liquid's vapor pressure exceeds the atmospheric pressure is considered…

Q: If crystallization does not occur even though the solution was thoroughly cooled..

A: Interpretation -  If crystallization does not occur even through the solution was thoroughly cooled…

Q: What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained…

A: Given: The volume of 0.0170 M aqueous solution of LaCl3 is 650 mL. The molecular formula of…

Q: Which of the following statements is TRUE regarding solubility in aqueous solutions? a) Solubility…

A: Aqueous solution is the one in which the solvent is water. When certain solutes are dissolved in…

Q: A mixture of Fe(OH)3 and water were prepared by using a solute-solvent mass ratio of 1:7. The…

A: Given :- ratio of Fe(OH)3 to water = 1:7  To determine :- percent by weight composition of the…

Q: For a solution composition of 10.0 g solute and 90.0 g solvent; choose the correct numerical…

A: Given : weight of solute = 10.0 g And weight of solvent = 90.0 g

Q: Briefly explain how slow cooling contributes to the formation of pure crystals during…

A: Re-crystallization can be explained as the method which of purifying any impure compound in a…

Q: Why do polar solute dissolves in polar solvent? And why does non polar solute dissolves in non polar…

A: The solubility of organic molecules is often summarized by the phrase "like dissolves like." This…

Q: Calculate the formality and normality of a commercial solution of H2SO4 whose purity is 97% and its…

A: 97% by weight of solution means 97 gram of H2SO4 in 100 gram of solution. Density of Solution = 1.82…

Q: 2. Explain why the colligative properties of a solvent are affected more by the dissolving of an…

A: Colligative properties are the properties related to the solution which depends upon the ratio of a…

Q: find the initial mole fraction and initial mass % of the solute (sucrose)

A: Mole fraction of sucrose = number of moles of sucrose/total moles  Number of moles = mass/molar mass…

Q: Describe exactly how to prepare a series of 8 solutions of a reagent with dilution factor of 2…

A: The chemical solutions are diluted by using below formula,

Q: Explain why the colligative properties of a solvent are affected more by the dissolving of an…

A: Colligative properties of the solution are the properties that depend only on the concentration of…

Q: (d) Why is complete solid solubility likely to occur in substitutional solid solutions but not in…

A: When we talk about substitutional solid solution the solute and solvent possess similar properties…

Q: 1. What are the experimental uncertainties in preparing a stock solution? 2. What are the…

A: 1. Stock solution is prepared followed by a dilution or series of dilutions to arrive at a working…

Q: What is the molarity of a solution in which 150g of CaO are dissolved in 1900ml of solution?  (MW:…

A: Given :-  Mass of CaO = 150 g  Volume of solution = 1900 mL  MW : Ca = 40g/mol, O=16g/mol  To…

Q: Describe the preparation of a 45.0 ml of 0.500 M solution of potassium permanganate solution,…

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Q: ercentage by volume,% v/v

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Q: Stirring a solid-liquid mixture has no effect on the rate at which a saturated solution forms.

A: Saturated solution is a type of solution in which no more solute can be dissolved in a given amount…

Q: In fractional distillation, the greater the length of a fractionating column: * the lower its…

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Q: When excess solute is put into a liquid solvent, crystallization ceases when equilibrium is reached.…

A: Part a) We know that,  when equilibrium is reached in the solution, then the dissolved solute starts…

Q: A student dissolves 10.9 g of ammonium chloride (NH,Ci) in 200. g of water in a well-insulated open…

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Q: Calculate +he molarity of a Solution that contains 4.759 df NacI dissolved in 45.0 mL Of SOLition?

A: Molar mass of NaCl is 58.44 g/mol. Mass of NaCl given is 4.75 g. Volume of solution is 45.0 mL.…