Calculate the mass of nitrogen dissolved at room temperature in 91.0 LL of the water contained within a home aquarium. Assume a total pressure of 1.0 bar, Henry's law constant for N2N2 of 6.1×10−4 mol L-1 bar-1and a mole fraction for nitrogen of 0.78.
Calculate the mass of nitrogen dissolved at room temperature in 91.0 LL of the water contained...
Calculate the mass of nitrogen dissolved at room temperature in80.0 L home aquarium. Assume a total pressure of 1.0 atm and a molefraction for nitrogen of 0.78.
1. Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 112 kJof heat? 2. Calculate the mass of nitrogen dissolved at room temperature in an 97.0 Lhome aquarium. Assume a total pressure of 1.0 atmand a mole fraction for nitrogen of 0.78. 3. Use Henry's law to determine the molar solubility of helium at a pressure of 2.0 atmand 25 ∘C....
Determine the solubility of N2 in water exposed to air at 25°C if the atmospheric pressure is 1.2 atm. Assume that the mole fraction of nitrogen is 0.78 in air and the Henry's law constant for nitrogen in water at this temperature is 6.1 × 10-4 M/atm.
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.41 and the Henry's law constant for oxygen in water at this temperature to be 1.3 × 10-3 M/atm. 96.3 mg 49.4 mg 63.2 mg 48.2 mg
Calculate the masses of oxygen and nitrogen that are dissolved in 7.0 L of aqueous solution in equilibrium with air at 25 °C and 760 Torr. Assume that air is 21% oxygen and 78% nitrogen by volume. Henry's law constants for gases in water at 25 °C Gas He kh (bar · M-1) 2.7 x 103 1.6 x 103 7.9 x 102 29 mass: mg 02 CO2 HS mass: mg N2 10.
4. The solubility of nitrogen gas in water at 25°C and a partial pressure of N2 of 0.78 atm is 5.5×10–4 mol/L. A. Calculate kH, Henry’s Law constant for nitrogen gas, at this temperature using the solubility at 0.78 atm. S = kH × P
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 ∘C to 50 ∘C. Assume that the water is initially saturated with nitrogen and oxygen gas at 25 ∘C and a total pressure of 1.0 atm. Assume that the gas bubbles out at a temperature of 50 ∘C. The solubility of oxygen gas at 50 ∘C is 27.8 mg/L...
help on questions 26-30
26. Which of the following concentration units will not change with temperature: molarity, percent mass, mole fraction, and molality. 27. Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL of water. The density of water is 0.997 g/mL. A) 1.51 % B) 7.57 % C) 13.3 % D) 15.2 % E) None of these 28. What is the molarity of a solution that is 5.50% by...
Calculate the concentration of CO 2 in orange soda that was bottled (at a certain temperature) with a partial pressure of CO 2 of 3.15 atm over the liquid. At that temperature, the Henry's law constant, k, for CO 2 is 3.05 x 10 -2 mol/L atm. (i.e., 3.05 x 10 -2 M/atm) 14.0 M 8.12 M 2.74 M 6.63 x 10 -3 M 0.0961 M 23.8 M 11.9 M 7.93 x 10 -1 M 2. What is the mole fraction of sucrose when...
g. What is the expected concentration of oxygen in open bodies water like lakes and rivers that are in contact with the atmosphere at 25 °C? What is the mass of dissolved O2 in 1 iter of water? Assume partial pressure of O2 in atmosphere is 0.22 bar and use Henry's Law constant K.30x102 mol(m3 kPa) for oxygen in water.