A standard crank ice cream maker uses a mixture of ice water and salt to cool ice cream mix to the point of freezing. If ice cream freezes at 27 degrees Fahrenheit, what is the minimum concentration of salt needed to make ice cream?

Q: If you dissolve 3 units of calcium hydroxide, how many particles are in the solution?

A: Compounds when dissolved in water dissociate into its corresponding ions. The solubility of…

Q: A student dissolves 20. g of aniline (CH,NH,) in 500. mL of a solvent with a density of 0.83 g/mL.…

A: Given :- mass of aniline = 20.g  Volume of solvent = 500.mL  Density of solvent = 0.83 g/mL  To…

Q: Calculate the freezing point of a water solution at each concentration. Express your answer using…

A: ∆Tf = Kf.m ∆Tf = freezing point of depression Kf = molal freezing point depression constant of…

Q: Does the amount of sugar that dissolves in 100 mLof water increase or decrease when the…

A: The solubility of a solution varies with the change in the temperature. It can decrease or increase…

Q: Find the concentration of a solution in ppm if 0.05g NaCl is dissolved in 1500 grams of water

A:

Q: Which of the following is true about enthalpy changes when a salt dissolves in water? if the…

A: Enthalpy of the reaction changes when heat is absorbed or released from the reaction.

Q: The boiling point of a solution of 250 g benzene and 45g solute boils at 90. what is the MM of the…

A: Given : Mass of solute = 45 g Mass of solvent = 250 g Change in temperature (∆Tb) = 90 K

Q: Dissection х-ахis у-ахis Solubility (g Pb(NO3)2/100 g water) Plot below points and Draw a line…

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Q: A solution is prepared by dissolving 120 grams of NaCl in 450grams of water. Find the freezing and…

A: Given in the question, Mass of NaCl= 120 gm Molar mass of NaCl = 58.44 gm/mol NO. of moles of NaCl=…

Q: The number of moles of CaCl2 in 5 litres of 5 M solution is *

A: Molarity: It is the parameter that is used to express the molar concentration of a solution. It can…

Q: A 1415 mL sample of drinking water was found to contain 82.0 mg of lead. Calculate the concentration…

A: Given Mass of lead       = 82 mg  Volume of water = 1415 mL        1000 mL     =  1 Liter       1415…

Q: A chemist added 40 mL of pure acetic acid to 100 mL of 20% (v/v) solution of acetic acid in water.…

A:

Q: A homogeneous mixture is made by dissolving 14.8 grams of solid potassium sulfite in 1000 g of…

A: A solution is made with water and potassium sulfite.

Q: A solution of sucrose in water is placed in sunlight without a lid. Which of the following…

A: The water from sucrose solution evaporates when placed in sunlight. So the volume of solvent and…

Q: A chemist prepares a solution of silver perchlorate AgClO4  by measuring out  2.1kg  of silver…

A:

Q: To make sweetened ice tea, a student must add sugar to the tea and water mixture. Which one of the…

A: We know that, the solubility of the substance depends on two factor: i) Surface area of Solute:  The…

Q: How many milligrams of sodium fluoride are needed to prepare 100 mL of a sodium fluoride stock…

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Q: C. Solubility of Gases in Liquids 1. Half-fill a 50-mL beaker with water. Warm gently with a small…

A: Solubility of a gas in liquid depends on the partial pressure of gas on the liquid surface.

Q: Calculate the boiling point of a solution of 154.09 g of ethylene glycol (C2H6O2) (MM = 62.0678)…

A: When ethylene glycol will add in water then elevation in boiling point is given below.…

Q: When 3.0 litre solution of normality N is mixed with 5.0 litre of 4M HCl, then the resultant…

A: The relation between gram equivalent and total volume of a solution is established by normality.…

Q: Directions Through the given situations below, answer the following questions 1 A mixture of…

A: Since you have posted multiple questions we will solve first question for you. If you want any…

Q: What is the percent of a sucrose solution if 18.2 grams of sucrose is dissolved in 500 mL of water?

A: Given,  Mass of sucrose = 18.2 g Volume in mL = 500 mL  What is the percent of a sucrose solution =…

Q: What is the volume percent of a solution made by mixing 29.5 teaspoons of high fructose corn…

A: Volume percent can be calculated by using the formula as:

Q: What will you see in the blood of a diver that has been deep in the ocean but then came rapidly to…

A: In accordance with Henry's Law, with the increase in pressure, the solubility of a gas also…

Q: _____4. The ff can be used for boiling a solution of salt, EXCEPT a) beaker b) Bunsen burner c)…

A: Analytical chemistry is branch of chemistry which is used to separate, identify, and quantify…

Q: how many grams of table salt must be added to half a liter of water to raise its boiling point by 15…

A:

Q: A certain tonic compound X has a solubility in water of 32.8 at 10. "C. Calculate the greatest mass…

A: Given : solubility = 32.8 g/Litre  Temperature = 10 °C = 283 K

Q: A lab technician prepares a 1.8M aqueous solution of copper (II) sulphate (CuSO4). The density of…

A: Number of moles of  CuSO4 in 1 L of solution = Molarity = 1.8  Mass of solution = Volume x density =…

Q: A chemist prepares a solution of barium chlorate (Ba (CIO3),) by measuring out 13.7 g of barium…

A: Concentration = number of moles/volume(in L)  And,  Number of moles = mass/molar mass

Q: Q1) Is this graph an endothermic or exothermic graph and why? Q2) Explain what is happening to the…

A: Q1): The Temperature vs time graph is given above in question: It is clear that the temperature of…

Q: The mass of calcium sulfide that is dissolved in 225 mL of a saturated solution is _____ gram

A: Solubility product is a product of the concentration of ions with the power when the solution is…

Q: Consider a solution prepared by adding 25.0 g NaCl to 125.0 g of water. What is the mass of NaCl…

A: Mass percentage is given by, Mass percentage = Mass of the soluteMass of the solution×100

Q: Calculate the heat energy in kcal evolved as 7.58 L of water freezes at 0.0°C.

A: We will calculate heat in Kcal

Q: Use the provided chart for this question. What is the minimum temperature required to dissolve at…

A: The solubility curve given is,

Q: If 80 grams of Sulfuric acid is dissolved in 3.5 L solution, what is its Normality?

A: From given data mass of sulfuric acid = 80 g  volume of solution = 3.5 L    Also molar mass of…

Q: 100 mL of water was mixed in 100 mL of 100 Proof alcoholic beverage. What is the percentage by…

A: percent by volume one of the concentration unit  here we are required to find the percentage by…

Q: What is the molarity of a solution containing 15g sulphuric acid in 150 ml solution? What is the…

A: Mass of sulphuric acid = 15 g  Volume of solution = 150 ml  Molarity of the solution = ?  Normality…

Q: Calculate the concentration in /molL of the chemist's barium acetate solution.

A: Number of moles = mass/molar mass  Molarity = moles/volume of solution(in L)

Q: Define 1. Solution 2. Solute 3. Solven

A: Solution is a mixture of two are more than two components. If two components are present it is…

Q: What conclusions can you draw about the solubility of gases as temperature increases? Figure 3…

A: As we know that the solubility of the gases in the solvent depends on the temperature and pressure…

Q: A chemistry student needs 90.0g of acetone for an experiment. She has available 420.g of a 44.1% w/w…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: How many liters of a 1.25 M aqueous solution of glucose solution contains 3.25 moles of glucose?…

A:

Q: 1. What will happen in a soda bottle after shaking vigorously and placed in a basin of hot water?…

A: In Soda water bottle has large amount of dissolved carbon dioxide .

Q: When making a solution, the container gets hot. This is an example of an endothermic process O…

A:

Q: Saline solution, a 0.92% (m/v) Sodium Chloride solution, is often administered intravenously to…

A: Given :-  %m/v = 0.92 %  Volume of solution = 345 mL  To calculate :-  Mass of sodium chloride (in…

Q: How many grams of Na Cl would need to be added to 318.00 grams of water to lower the freezing point…

A: Given: Mass of water = 318.00 g = 0.318 Kg                                   (Since 1 Kg = 1000 g)…

Q: Neomycin is commercially available 20 g/10 mL. You receive an order for a liter of 1% Neomycin…

A:

Q: 2. A beaker of water and a beaker containing a sugar solution were placed in a closed container at…

A: Since the sugar solution has lower molar fraction of water than other water beaker.(pure water)).…

Q: What is the normality of 0.25 F sulfurous acid

A: The chemical formula of Sulfurous acid is H2SO3. Molarity and Normality are ways to measure the…

Q: A chemistry student needs 20.0 g of thiophene for an experiment. She has available 1.5 kg of a 6.84%…

A: GivenConcentration of solution = 6.84 % w/wMass of available solution = 1.5 kg = 1500 gMas of…