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Calculate the concentration of nonelectrolyte solute particlesin human blood if the osmotic pressure is 7.53 atm at37oC, the temperature of the body.
A 227 mL benzene solution containing2.53 g of an organic polymer has anosmotic pressure of 8.63 mmHg at 21°C. Calculate the molar mass of the polymer. (g/mol)
Calculate the mass in grams of area that must be added to150.g water to give a solution whose vapor pressure is 2.5 mm Hgless than that of pure water at 40 oC (vp H2Oat 40 oC =55.34 mm Hg).
Suppose 0.2506g of Na2C2O4 isdissolved in 250mL of 1M H2SO4. This solution requires 34.7mL of KMnO4 solution for titration, what is the molarity of the permanganate solution?
A solution containing ethylene glycol and water has a vapor pressure of 7.88 torr at 10C. Pure water has a vapor presssure of 9.21 torr at 10C. What is the mole fraction of ethylene glycol in the so
Four particles with charges of +1.00 µC, -2.00 µC, +3.00 µC, and -4.00 µC are located at the points (0, 0), (2.00, 0) cm, (2.00, 4.00) cm, and (0, 4.00) cm, respectively. Wha
Assume that amolecule can adopt 10,000 distinct conformations. The energy of the ground state conformationis -4.0 kcal/mol, whereas the energies of the other 9,999conform ations are degenerate (each
The rabbit travels a total distance of 1080 m, and its average speed is 0.87 m/s. (a) What is the total time the rabbit spends running at 1.7 m/s?
Find the direction of the electric force on the charge in the center. Express your answer as a vector of length one by stating its components in the up, east, and north directions.
Why conceptually, does the ground state for the particle in the boxmodel correspond to n=1 while for the harmonic oscillator and the particle on a ring model it is n=0? For all three models, why do
A horizontal constant force F= 12.0 N is applied to the block, which then moves the block a distance of 5.0m with constant acceleration. a) the magnitude of the linear acceleration of the system.
A jogger maintains a speed of 3.2 m/s for 216 m until he encounters a stoplight, and he abruptly stops and waits 29 s for the light to change. He then resumes his exercise and maintains a speed of
In which string will the pulse move faster? How much additional time will the slower pulse require reaching the end of its string?
Will the equilibrium constant,Kp, for this Sysatem be large or small at temperature greater than298ok? Explain your justification.
A piece of silver weighs 89.5 N in the air, 78.5N in the water and 85.6N in an unknown liquid. Find the densities of the metal and of the unknown liquid.
Transverse pulses travel with a speed of 200 m/s along a taut copper wire whose diameter is 1.50 mm. What is the tension in the wire? (The density of copper is 8.92 g/cm3.)
An infant ibuprofen suspension contains 100 mg/5.0 mL suspension. The recommended dose is 10 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 20lb?
(a) What value of absolute zero in degrees Celsius does the calibration yield? What pressures would be found at (b)the freezing and (c) the boiling points of water? Hint: Use the linear relationship
Write a problem containing at least three forces of different magnitudes and directions which results in a constant acceleration. The problem should also require resolving forces into their componen
Why are aqueous solutions of ammonia sometimes called ammonium hydfroxide? Write the appropriate chemical equation for the equilibrium which applies.
A rocket-powered sled starts from rest on a frozen lake that is 8 miles across. The sled then accelerates at +20 ft/s for 2 minutes. Then, the rockets are shut off and the sled coasts with a constan
Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 105K and 3.0 atm pressure is sealed off.
A block slips on a greased surface with an initial velocity v0. It experiences a drag force equal to F = -cv3/2 (for positive velocity v). Find the velocity and position as a function of time if at
Gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated, and after the water was driven off, 3.87g anhydrous calcium sulfate remained. Determine the formula of this hydrate a
Suppose the plates for each key have an area of 47.5 mm^2 and an initial separation of 0.550 mm. In addition, let the dielectric have a dielectric constant 3.75. If the circuitry of the computer can