Assuming that the osmotic pressure of a sample of sea water at 10 °C is 24.5...
Assuming that the osmotic pressure of a sample of sea water at 10 °C is 24.5 atm, calculate the work required under reversible conditions at this constant temperature to prepare 81 litre of pure water from this sea water. (Take the available volume of sea water as infinite and therefore unchanging in composition as 81 litre of pure water is extracted). Express your answer in J.
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Assuming that the osmotic pressure of a sample of sea water at
10 °C is 24.5...
1.a)The average osmotic pressure of sea water is 30 atm (atmospheres). Calculate the concentration of urea...
1.a)The average osmotic pressure of sea water is 30 atm (atmospheres). Calculate the concentration of urea (CH4ON2) at 25 ° C that exerts the same pressure as seawater. R = 0.082 atm L/ mol K 1.b) There is a 1M solution of CH3COOH (acetic acid) in a total volume of 450 mL. What is the molality (m) of the solution? (ρ solution = 1.15 g / mL).
Ng the deep sea water presstre over the dissolved gases as the partial pressure of the gas exerti...
ng the deep sea water presstre over the dissolved gases as the partial pressure of the gas exerting er the liquid. What would be the molar concentration of oxygen gas, O2(g). in M, dissolved in the blood circulation system of Ahmed Gabr, who set the record to dive down to a depth of 332 meters under the sea in 2014 atm 760 mmHg 10.336 meter H2O column. The Henry's law constant for oxygen gas, O2(g): k110: 1.3 x 10-3 M/atm...
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa....
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
Henry’s law states that the solubility of a gas is directly proportional to the partial pressure...
Henry’s law states that the solubility of a gas is directly proportional to the partial pressure of the gas if the temperature is constant. Hyperbaric chambers, which provide high pressures (up to 6 atm) of either air or pure oxygen, are used to treat a variety of conditions, ranging from decompression sickness in deep-sea divers to carbon monoxide poisoning. Look up the Henry’s Law Constant (kH) for N2, O2, and CO2 in the textbook. a) Calculate the solubility (concentration in...
Calculate the (equilibrium) sublimation temperature of CO_2 at a pressure of 2 atm assuming a constant...
Calculate the (equilibrium) sublimation temperature of CO_2 at a pressure of 2 atm assuming a constant enthalpy of sublimation of Delta H-26 kJ/mol. he sublimation temperature of CO_2 at 1 atm is -78.5 degree C. Gold has an equilibrium melting temperature of 1337 K at 1 atm and an enthalpy of fusion of 12, 550 J/mol. Find the pressure at which the equilibrium melting temperature is 1400 K. The densities of solid gold and liquid gold are 19.3 g/mL and...
In a closed container, one gram of water (1 cm) is boiled under constant pressure of...
In a closed container, one gram of water (1 cm) is boiled under constant pressure of 1 atm (1.013 10Pa) until it changes into steam. The heat of vaporization at this pressure is Lv = 2.256 x 106J/kg = 2256 J/g. Assume that water vapor behaves like an ideal gas. The temperature of the steam is 373 K, number of moles of water vapor n = 0.0546 (g mol), the ideal gas constant R = 82.057 (cm3.atm/g mol-K). (a) How...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the concentration of Ferric sulfate in the following in terms of (a) mg/L, (b) ppm, (c) molarity, (d) % weight (Assume the specific gravity of solution is 1.0) A 10-litre cylinder containing 500 g of chlorine gas is to be used for disinfection of water. What will be the pressure inside the cylinder at a temperature of 20 degree C? A digester gas holding tank...
In a constant pressure calorimeter at standard conditions, 0.400 mol sodium metal is reacted with 432.0...
In a constant pressure calorimeter at standard conditions, 0.400 mol sodium metal is reacted with 432.0 mL of water as indicated in the following balanced thermochemical equation: 2 Na (s) + 2 H2O (l) → 2 NaOH (aq) + H2 (g) Calculate BOTH ΔrH and ΔrU for this reaction (at standard conditions), assuming ideal gas behavior and the following: -the dry calorimeter apparatus has a total heat capacity of 678 J / deg C -the calorimeter, water and...
A water electrolyzer draws 1000 A of current. a. How many mol/h of Hydrogen are produced?...
A water electrolyzer draws 1000 A of current. a. How many mol/h of Hydrogen are produced? b. What is the corresponding mass flux of Hydrogen (g/h)? c. The Hydrogen is pumped into a storage tank whose total volume is 100 L. If the pressure at a given point in time is 50 bar (absolute), what is the pressure 10 h later? Assume a constant temperature of 298 K. d. How many total grams of Hydrogen does the tank contain if...
chpt.9 pg 11: Pressure and temperature affect the amount of space between gas molecules, which affects...
chpt.9 pg 11: Pressure and temperature affect the amount of space between gas molecules, which affects the volume and, therefore, the density of the gas since density=massvolume The molar mass of a substance, however, is a constant and can be used to identify an unknown gas sample. Molar mass is found by dividing the mass of a sample (in grams) by the number of moles in that sample. The number of moles of gas can be calculated using the ideal...
ng the deep sea water presstre over the dissolved gases as the partial pressure of the gas exerting er the liquid. What would be the molar concentration of oxygen gas, O2(g). in M, dissolved in the blood circulation system of Ahmed Gabr, who set the record to dive down to a depth of 332 meters under the sea in 2014 atm 760 mmHg 10.336 meter H2O column. The Henry's law constant for oxygen gas, O2(g): k110: 1.3 x 10-3 M/atm...
At sea level, water boils at 100 °C, and the absolute atmospheric pressure is 101 kPa. As the atmospheric pressure above water decreases, the temperature required for boiling also decreases, at a rate of 3.1 kPa per "C. For the system shown below: a. What is the absolute atmospheric pressure at an elevation of 4100 m, assuming a constant unit weight of air of 11.80 N/m3? b. What will be the boiling temperature for water at this elevation? Elev. =...
Calculate the (equilibrium) sublimation temperature of CO_2 at a pressure of 2 atm assuming a constant enthalpy of sublimation of Delta H-26 kJ/mol. he sublimation temperature of CO_2 at 1 atm is -78.5 degree C. Gold has an equilibrium melting temperature of 1337 K at 1 atm and an enthalpy of fusion of 12, 550 J/mol. Find the pressure at which the equilibrium melting temperature is 1400 K. The densities of solid gold and liquid gold are 19.3 g/mL and...
In a closed container, one gram of water (1 cm) is boiled under constant pressure of 1 atm (1.013 10Pa) until it changes into steam. The heat of vaporization at this pressure is Lv = 2.256 x 106J/kg = 2256 J/g. Assume that water vapor behaves like an ideal gas. The temperature of the steam is 373 K, number of moles of water vapor n = 0.0546 (g mol), the ideal gas constant R = 82.057 (cm3.atm/g mol-K). (a) How...
If 0.1 g of Ferric sulfate Fe_2(SO_4)_3 is added to 1 L of water, Express the concentration of Ferric sulfate in the following in terms of (a) mg/L, (b) ppm, (c) molarity, (d) % weight (Assume the specific gravity of solution is 1.0) A 10-litre cylinder containing 500 g of chlorine gas is to be used for disinfection of water. What will be the pressure inside the cylinder at a temperature of 20 degree C? A digester gas holding tank...
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