select those that utilize the colligative property of freezing-point depression. - Chilling an ice cream maker...

select those that utilize the colligative property of freezing-point depression.

	-	Chilling an ice cream maker with a brine solution

	-	Adding salt to water before bringing the water to a boil for cooking applications
-		Determining the amount of sugar in cane juice syrup by boiling it
-		Determining the molar mass of unknown substances
-		Rainbow smelt that can survive in freezing water
		Adding ethylene glycol to water for use as antifreeze in automobiles or none of the above

Expert Solution

queen_honey_blossom answered 2 years ago

The freezing point is propertie of colligative characterized by lowering of the freezing point of a...

The freezing point is propertie of colligative characterized by lowering of the freezing point of a liquid in the presence of a non-volatile solute. The cryoscopic lowering a, Δ t, is expressed by: ΔT = kcM where KC is the cryoscopic constant and M is the total molality of the solution species. Consider aqueous solutions and concentrations 5,0x10-3 mol.kg -1 with fully dissociated solutes: potassium nitrate (KNO3), calcium chloride (CaCl2), cadmium nitrate ((Cd (NO3) 2), ferric chloride ( FeCl 3)...

1. Which of the following is not a colligative property? explain a) freezing-point lowering b) boiling-point...

1. Which of the following is not a colligative property? explain a) freezing-point lowering b) boiling-point elevation c) solute solubility d) osmotic pressure e) vapor-pressure lowering 2. If 12.9 g of naphthalene, C10H8, is dissolved in 115.6 g of chloroform, CHCl3, what is the molality of the solution? explain a) 0.101 m b) 0.104 m c) 0.872 m d) 13.3 m e) 0.100 m 3. The molality of a solution is the _ (explain) a) moles of solute per liter...

Pottle Ice Cream uses a mixing department and a freezing department to produce its ice cream....

Pottle Ice Cream uses a mixing department and a freezing department to produce its ice cream. Its process costing system in the mixing department has two direct materials cost categories (ice cream mix and flavourings) and one conversion cost pool. The following data pertain to the mixing department for April 2018: Work-in-process, 1 April 0 Started in April 10 000 litres Completed and transferred to freezing 8 500 litres Costs: Ice cream mix $27 000 Flavourings $4 080 Conversion costs ...

Molar Mass Determination by Depression of the Freezing Point A student determines the freezing point of...

Molar Mass Determination by Depression of the Freezing Point A student determines the freezing point of a solution of 0.630 g of mandelic acid in 20.78 g of tbutanol. He obtains the following temperature-time readings: Time (min) Temp (C) Time (min) Temp (C) Time (min) Temp (C) 0.0 34.9 3.0 22.3 6.0 21.8 0.5 33.3 3.5 21.4 6.5 21.7 1.0 29.7 4.0 22.3 7.0 21.6 1.5 27.1 4.5 22.2 7.5 21.5 2.0 25.2 5.0 22.1 8.0 21.3 2.5 23.6 5.5...

The formula that governs the depression of freezing point and elevation of boiling point for a...

The formula that governs the depression of freezing point and elevation of boiling point for a solution consisting of a solute dissolved in a solvent is: ΔT = i × kb × m where: ΔT = the temperature change between a pure solvent and its solution i = the number of species per mole of solute that are dissolved in the solvent (e.g., i = 1 for a non-ionic solute that does not break apart into ions; i = 2...

Determine the colligative (effective) molality of a truly saturated salt solution and the freezing point of...

Determine the colligative (effective) molality of a truly saturated salt solution and the freezing point of a truly saturated salt solution (solubility limit of NaCl is 35.7 g)

a frozen ice cream is placed into a container before the freezing process is complete. The...

a frozen ice cream is placed into a container before the freezing process is complete. The container has dimensions of infinite shapes 8, 10 and 12 cm and is then placed in a water blast freezer with a heat conductivity coefficient of 50W / (m2 K). product temperature of -14 degrees centigrade and air temperature of -25 degrees centigrade. product density is 700 Kg / m3, thermal conductivity (frozen) 1.2 W / (m K) and specific heat 1.9 kJ /...

Calculate boiling point depression and freezing point depression. Make sure to include correctly written dissociation equation....

Calculate boiling point depression and freezing point depression. Make sure to include correctly written dissociation equation. A. 0.25 m ethylene glycol -C2H6O2 B. 0.25 m NaCl

4. a frozen cream ice is placed into the container before the freezing process is complete....

4. a frozen cream ice is placed into the container before the freezing process is complete. The container has a slinder-shaped dimension with a diameter of 3.5m and is then placed in a water blast freezer with a heat conductivity coefficient of -25 W (m2 k). product temperature of -11 c and air temperature of -25 c. product density is 700kg / m3. thermal conductivity (frozen) 1.2 W / (m K), and specific heat 1.9 kj (kg / K). if...

In a molecular weight determination by freezing point depression experiment: Why is it not necessary to...

In a molecular weight determination by freezing point depression experiment: Why is it not necessary to wait for the entire sample to freeze in order to determine its freezig point??

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