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The isothermal compressibility of lead is 2.21x10^-6 atm^-1. Express this value in Pa^-1. A cube of lead of side 10 cm at 25C was to be inserted in the keel of an underwater exploration TV camera, a
What is the concentration of dissolved sulfate in the water once equilibrium is achieved? If additional 10 grams is added, what would be the new equilibrium concentration of calcium sulfate?
One mole of an ideal gas is expanded at T = 300 K from a volume of 1.00 liter to a volume of 10.00 liters against a constant external pressure of 1.00 atm. How much work is performed on the surround
The thermal decomposition of N2O5 obeys first-order kinetics. At 45 degrees Celcius, a plot of ln(N2O5) versus t gives a slope of -7.10 * 10^-4 min^-1. What is the half life of the reaction?
A mixture of potassium chloride and potassium bromide weighing 3.595 g was heated with chlorine which converted the mixture completely to potassium chloride.
Using the heats of vaporization for at 25 = 44.02 , at 100 = 40.67 , calculate the entropy change for the vaporization of water at 25 and at 100 .
Describe what is meant by part per million and part per billion. Compare and contrast the normal definition when referring to a liquid and gas?
The Henry's law constant for hydrogen in water at 25 C is 7.8 \times 10^ 4 mol/L *atm. Estimate the number of moles of hydrogen gas that remain dissolved in the solution.
Macrophages are cells referred to as "big eaters" or "killing machines" that destroy any foreign agents (pathogens) or antibodies found in the body.
A 9.528 quantity of zinc was allowed to react with 40.00 of sulfuric acid that had a density of 1.3028 . The reaction yielded gas and a solution of zinc sulfate.
What is the apparent depth of the reflection of the fish in the bottom of the tank when viewed at normal incidence?
A sample consisting of various gases contains 3.8×10-6 mole fraction of radon. This gas at a total pressure of 34 atm is shaken with water at 30C. Calculate the molar concentration of radon i
Three charges are fixed in the x-y plane as follows: 1.7nC at the origin (0,0); 2.2nC at (0.65m, 0); -1.8nC at (0,1.60m). Find the magnitude of the force acting on the charge at the origin.
What is the volume in the beaker with the aqueous solution of a nonvolatile nonelectrolyte when equilibrium is attained, assuming ideal behavior?
The coefficient of kinetic friction between your tires and the road is Δk=0.35 while for his car it is Δk =0.25. A) What is the acceleration of each vehicle?
Calculate the formal concentrations of acetic acid and sodium acetate necessary to prepare a buffer solution of pH 5 that is 0.2 M in total acetate. The pk of acetate is 4.76.
Two ping-pong balls each have a mass of 2.7g and carry a net charge of 0.430μC. One ball is held fixed. At what height should the second ball be placed directly above the fixed ball if it is to r
In order to purify a certain protein you require 0.1M glycine buffer at pH 9.4. Unfortunately, your stock room has run out of glycine. However you manage to find two 0.1 M glycine buffer solution. O
How far downstream is the swimmer carried in 1.5 min. and what is his velocity relative to an observer on shore?
Suppose propene (CH2=CH-CH3) is the hydrocarbon that reacts with the hydroxyl radical. Beginning with the addition of OH. radical, write the set of chemical reactions that ultimately produces an ald
When the key is in the "up" position, the plate separation is 0.74mm. How far must the key be depressed for a keystroke to be registered which happens when the capacitance increases by 3.9 pF?
The following proposal to repair the ozone layer has been made. The suggestion is to inject 'negative charges' into the lower stratosphere, and these would react with CFC's to produce harmless produ
A stone is trown vertically downward at an initial speed of 14m/s from a height of 65m above the ground.How far does the stone travel in 2.0s and what is the velocity just before it hits the ground?
First, what is the error in my measurement of 18 rotations?(For the number use two digits to the right of the decimal point.
How to calculate the mass of propylene glycol (C3 H8 O2 ) that must be added to 0.350 kg of water to reduce the vapor pressure by 2.87 torr at 40 C (P H2O at 40 C} = 55.3 torr?