Explain the formation of scum when hard water is treated with soap.

Q: Write chemical equations to show what happens when each of the following substances is mixed with…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: 27% oleum solution is equivalent to a solution that is _______ % SO3 and _______ % H2SO4.

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Q: Define the Application of Solubility: Soap ?

A: Solubility is defined as the complete the mixing of solute in solvent to give solution. Solubility…

Q: 1. Calculate the mass, in grams, of sodium hydroxide needed to prepare 500 mL of approximately 0.1 M…

A: Mole = Molarity × Volume in litre Molar mass NaoH = 39.997g/mol.

Q: Glucose makes up about 0.10% by mass of human blood. Calculate concentration in ppm

A: Given : percent by mass of glucose in blood = 0.10 % Assuming 100 g of blood.

Q: What are the factors that affect the dissolved oxygen content in water? Explain how they affect…

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Q: List at least 5 limitations of using distillation as a method of purification

A: Distillation Process :* Distillation is the process of separating the substance or components from…

Q: What happens to the freezing point of H2O when salt is dissolved?

A: Freezing point : The point at which  water becomes ice.

Q: Calculate the molar concentration of the solution in which 98.0 g of phosphoric acid, H3PO4. is…

A: Molar concentration or Molarity: Molarity is the number of moles of solute in 1 L of the solution.…

Q: Describe how to prepare 1.00 L of 0.646 M HCl solution, starting with a 2.00 M HCl solution.

A: To prepare a solution we should follow  M1V=M2V2 equation  M1= 0.646M  V1=1L M2=2M V2=?

Q: Choose the substance that is classified correctly? O NaF is a basic salt in aqueous solution O AICI,…

A: When a salt anion is formed from a strong base and a weak acid, then the resulting salt is basic as…

Q: Describe the cleansing action of soap and detergent

A: cleansing action of both soaps and detergents results from their ability to lower the surface…

Q: If 1.5234 grams of H2C2O4·2H2Ois dissolved in water to prepare a0.250 L solution, identify the…

A: Given that, the mass of compound H2C2O4.2H2O = 1.5234 g Volume of solution that has to be prepared…

Q: a) Write the chemical equation for the dissolution of NH4Cl in water. b) Write the chemical…

A: Dissolution can be defined as the process of dissolving the substance or solute (solid, liquid, or…

Q: What is the concentration of a NH₂I solution that was made by diluting 45 mL of a stock 12 molar…

A: Given data Concentration and volume of stock solutionC1=12 mol/LV1=45 mL=451000 L=0.045 L…

Q: The amount of caffeine contained in 150 mL of a reasonably strong cup of Starbucks coffee is about…

A: The percentage of weight per volume is gives as the amount of solute in grams present per 100 mL of…

Q: How much concentrated solution would it take to prepare 2.95 L of 0.585 M HCl upon dilution with…

A: To find how much concentrated solution would it take to prepare 2.95 L of 0.585 M HCl upon dilution…

Q: What volume of 9 M HCl must be used to prepare 1.5 L of 0.25 M HCl?

A: The volume of 9 M HCl that must be used to prepare 1.5 L of 0.25 M HCl is to be determined.

Q: How many grams of calcium hydroxide, Ca(OH)2 are required to neutralize 43.26 milliliters of 0.550 M…

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Q: 1. Calculate the volume of the concentrated acid and the volume of water required to produce 0.525 L…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: Calculate the amount of conc. HCl

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Q: Enumerate the procedures/processes in the determination of water hardness.

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Q: What intermolecular forces could sodium lauryl sulfate participate in? and why?

A: The question is based on the concept of intermolecular forces of attraction. we need to identify the…

Q: Describe what occurs during the dissociation of NaCl inwater. What occurs when glucose (C6H12O6 )…

A: Electrolytes dissociate into their constituent ions when they are dissolved in water. Electrolytes…

Q: Sodium Methylsulfonate is an inefficient detergent. Explain why

A: Dear Subscriber! You have posted multiple questions. As per our guideline, we have answered only…

Q: Why do raisins float in mineral water with salt compared to distilled water with salt (where it…

A: Given: raisins float in mineral water with salt compared to distilled water with salt (where it…

Q: Choose the substance that is classified correctly? O NaF is a basic salt in aqueous solution O FeBr3…

A: NaF is mixture of strong base and weak acid so resulting nature of salt is basic. In FeBr3 HBr is…

Q: What are the molarity of solutions 85.0% H, PO, specific gravity 1.689, F. wt 98 g / mol

A: The question is based on the concept of solution preparation. we have been given a stock solution of…

Q: Consider a 1.0 mol/L CH3OH(aq) solution. What properties would this solution have? | It would turn…

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Q: Why is a salt solution used in the preparation of soap

A: In this question we have to write the explanation why salt added in the solution during the…

Q: A 2073 g sample of ground water is found to contain 0.0522 g of arsenic. Calculate the concentration…

A: Given: Mass of water sample = 2073 g. And mass of arsenic = 0.0522 g.

Q: Heat generated by the dissolving of sodium hydroxide is known as: a) heat of formation. b) heat of…

A: Heat is a form of energy transfer from one place to another.

Q: How to deal with a product contaminated by NaCl?

A: 1st case: When the product is insoluble in water. When the residue or our product is insoluble in…

Q: Explain the cleansing action of soap.

A: Soaps are defined as the salts of the fatty acid which are generally used as the cleanser and…

Q: Write chemical equations to show what happens when each of the following substances is mixed with…

A: Let us take all the reactions with water, one by one.

Q: balanced chemical equation for the reaction between aqueous solutions of strontium cyanide and…

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Q: 1.50 L of a hydrogen peroxide solution produces 16 L of oxygen gas at STP. a. Calculate the…

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Q: Define the process of salting. What is the use of salting?

A: Salting is a  preservative method in which the common salt (Nacl), sodium chloride is used as the…

Q: How many millimeters of concentrated HCl are needed to prepare 500mL of 0.25N HCl?

A: Volume = 500 ml = 0.500 L (1L = 1000 ml) Normality = 0.25 N ->I think question asked about…

Q: What is the ideal level of water hardness for sea water?

A: Water hardness is mainly due to salts of calcium and magnisum being dissoved in water. The two types…

Q: How many grams of NaOH are needed to prepare 500mL of 0.125 M NaOH?

A: Answer:- This question is answered by using the simple concept of calculation of mass using moles…

Q: What is the difference between analytical grade salt ( NaCl) and store-bought salt

A: Analytical grade refers to the purity of the substance. The pure substance are used in laboratories…

Q: 1. Compute for the amount of NaOH pellets needed to prepare 500 mL of 0.1 M solution. 2. Explain in…

A: Molarity is the number of moles of the solute present in per litre solution. It is denoted by the…

Q: How many of the following compounds are insoluble in water? KC2H3O2 CaSO4 SrS ΑΙΡΟ4 1 2 3 4

A: The solubility represents the dissolution of solute in a particular solvent in a specific…

Q: Write a balanced chemical equation to represent the reaction between bleach and hydrochloric acid?

A: The chemical formula of hydrochloric acid = HCl and bleach = NaOCl which is known as sodium…

Q: What would be the molar concentration of a 60 ppm stock solution of Blue dye #1

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…