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A glycol-water solution is cooled from 60 degrees C to 20 degrees C. If the initial...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of 9.78% of ethylene glycol with a density of 1.0108 g/mL. The freezing point depression constant for water (solvent for all solutions) is Kf=-1.86 percent celsius kg/mol and the boiling point elevation constant is Kb=0.512 degrees celsius kg/mol. The density of neat water at 20.0 degrees celsius is 0.9982 g/mL. Answer the following: 1. What is the molarity of the solution? 2. What is the...
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of...
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
An antifreeze solution is made by mixing ethylene glycol (ρ = 1116 kg/m3) with water. Suppose...
An antifreeze solution is made by mixing ethylene glycol (ρ = 1116 kg/m3) with water. Suppose the specific gravity of such a solution is 1.05. Assuming that the total volume of the solution is the sum of its parts, determine the volume percentage of ethylene glycol in the solution.
20. How many grams of water can be cooled from 35 to 20 °C by evaporation of 60 grams of water? (heat of vaporizati...
20. How many grams of water can be cooled from 35 to 20 °C by evaporation of 60 grams of water? (heat of vaporization of water = 2.4 kJ/g) (specific heat of water = 4.18J/mole K) A) 1.6 x 10 g B) 2.3 x 103g C) 2.6 g D) 1.6 g E) 2.3 g
In an ethylene glycol-water solution, there are 20.0 g ethylene glycol for every 80.0 g water....
In an ethylene glycol-water solution, there are 20.0 g ethylene glycol for every 80.0 g water. This solution is used for filling a 450.0 gallon reservoir. Suppose the density of this mixture solution is ρ= 1.0529 g/ml. (a) What is the molarity of this solution? (b) If you need to fill the 450.0 gallon tank in 170.0 s, what is the volumetric flow rate of the solution into the tank? (c) How many moles of ethylene glycol are in the...
It is observed that 55.00 mL of water at 20∘C completely fills a container to the...
It is observed that 55.00 mL of water at 20∘C completely fills a container to the brim. When the container and the water are heated to 60∘C, 0.35 g of water is lost. What is the coefficient of volume expansion of the container? Density of water at 60 ∘C is 0.98324 g/mL. answer in 1/c
A water balloon is launched with an initial speed of 40 m/s at 60 degrees above...
A water balloon is launched
with an initial speed of 40 m/s at 60 degrees above the horizontal.
A tall building is 40 m from the launch site. Neglect air
resistance and use g = 10 m/s^2.
(numbers 8-11) A water balloon is launched with an initial speed of 40 m/s at 60 degrees above the horizontal. A tall building is 40 m from the launch site. Neglect air resistance and use g 10 m/s2 8. How much time does...
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water...
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water evaporates from the surface of a lake at a rate of 0.20 kg/h per square metre of water surface area. The temperature of water is 25°C. (a) Determine the mass transfer coefficient. (10 marks) (b) Determine the convective heat transfer coefficient. (10 marks) (c) Determine the net heat loss (in W/m2) from the lake. (5 marks) The specific volume of water vapour at 25°C...
1. how many milliliters of water at 15 degrees C with a density of 1.00 g/ml...
1. how many milliliters of water at 15 degrees C with a density of 1.00 g/ml must be mixed with 75 mL of instant coffee at 100 degrees C so that the reuslting combination will have a temperature of 60 degrees C? Assume that coffee and water have the same density and the same specific heat. 2. a cylinder has a mass of 3262.6 mg. a graduated cylinder filled with water had an initial volume of 1.42 L. when the...
25. Homework: Twenty liters of air at 20°C and a relative humidity of 60% are compressed...
25. Homework: Twenty liters of air at 20°C and a relative humidity of 60% are compressed isothermally to a volume of 4 liters. Calculate the mass of water condensed. The saturation vapor pressure of water at 20°C is 23 hPa. Density of air at 0°C and 1000 hPa is 1.28 kg/m3.
A solution of ethylene glycol in water at 20.0°C has a mass percent of 8.25% of ethylene glycol with a density of 1.0087 g/mL. The freezing point depression constant for water (which you can assume is the solvent for all solutions) is K1.86°C kg/mol and the boiling point elevation constant is Kb the following: 0.512°C kg/mol. The density of neat water at 20.0°C is 0.9982 g/ml. Answer 1. What is the molarity of the solution? 2. What is the molality...
20. How many grams of water can be cooled from 35 to 20 °C by evaporation of 60 grams of water? (heat of vaporization of water = 2.4 kJ/g) (specific heat of water = 4.18J/mole K) A) 1.6 x 10 g B) 2.3 x 103g C) 2.6 g D) 1.6 g E) 2.3 g
In an ethylene glycol-water solution, there are 20.0 g ethylene glycol for every 80.0 g water. This solution is used for filling a 450.0 gallon reservoir. Suppose the density of this mixture solution is ρ= 1.0529 g/ml. (a) What is the molarity of this solution? (b) If you need to fill the 450.0 gallon tank in 170.0 s, what is the volumetric flow rate of the solution into the tank? (c) How many moles of ethylene glycol are in the...
A water balloon is launched
with an initial speed of 40 m/s at 60 degrees above the horizontal.
A tall building is 40 m from the launch site. Neglect air
resistance and use g = 10 m/s^2.
(numbers 8-11) A water balloon is launched with an initial speed of 40 m/s at 60 degrees above the horizontal. A tall building is 40 m from the launch site. Neglect air resistance and use g 10 m/s2 8. How much time does...
25. Homework: Twenty liters of air at 20°C and a relative humidity of 60% are compressed isothermally to a volume of 4 liters. Calculate the mass of water condensed. The saturation vapor pressure of water at 20°C is 23 hPa. Density of air at 0°C and 1000 hPa is 1.28 kg/m3.
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