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A closed system initially containing 0.625 M H2 and 0.285 MBr2 is allowed to reach equilibrium. Analysis of the equilibrium mixture shows that the concentration of HBr is0.324 M at a certain te
A uniform electric field is changing over time by a rate of 7.0 . If the displacement current is 5.1×10-9 through a 1.0 surface, what is the angle that the electric field makes with the plane of
What is Delta H degree f for an elements in standard state? What does it mean if thevalues are negative for a givensubstae?
A circuit consists of a 1-mH inductor connected in series with a 2-O resistor and a 10-V battery connected for a long time. After the battery is removed from the circuit, how long does it take the c
How many coulombs would be required to electroplate 35.0 gramsof chromium by passing an electrical current through a solution containing CrCl3?
At what speed must he drive for the remainder of the trip to complete the trip in the usual amount of time?
A current of 2.50 A was passed through an electrolyticcell containing molten CaCl2 for 4.50 hours. How many moles of calcium metal should be deposited?
which is a half-life of 87.7 years. If this decay reaction is the only source of energy available to this device, determine the initial mass of 238^Pu required so that it has sufficient power for it
What would be its solubility in -.1- M Na2SO4? The diff. is caused by what is called the cmmon ion effects.state what the common ion effect predicts.
When aqueous HCl is added to solid magnesium carbonate, the solid dissolves with bubbling. Write a balanced net-ionic equation that describes this reaction.
A 6kg bowling ball is held above a spring(k= 500 N/m) and dropped. If the spring compresses a distance of 25 cm, how high above the spring's original uncompressed position was the ball dropped?
An 80 kg skier starts from rest at the top of a hill that is 20 meters high and slides down a 30 degree slope. If the coefficient of friction between the skis and the snow is 0.2, find the skier's
What is the minimum speed that a Gravitron or Round- Up type ride must spin so that a person doesn't slide out of the bottom when the floor is dropped away. The ride has a radius of 8 m and the maxi
At a particular temperature, N2O5 decomposesaccording to a first order rate law with a half life of 3.0seconds. If the initial concentration ofN2O5 is 1.0 x 1016molecules/cm3, what will be t
Explain why an ammeter should have a small internal resistance, while a voltmeter should have a very large internal resistance.
A 0.1964 g sample of quinone(C6H4O2) is burned in a bombcalorimeter that has a heat capacity of 1.56 kJ/°C. The temperature of the calorimeter increases by 3.2°C. Calculate the energy of co
A 47g golf ball is driven from the tee with an initial speed of 52m/s and rises to a height of 24.6m (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b)
Calculate the change in Gibbs energy at 37 degrees celcius when the human kidneys secrete 0.275 mole of urea per kilogram of water from blood pllasma to urine if the concentrations of urea inblood p
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 77.4 N the acceleration of the box is 0.481 m/s2; when you increase the force to 83.1 N
If a flask contains 0.015 M of CO, 0.021 M of Cl2,and 0.38 M COCl2 at 670 K, calculate the equilibrium constant, KC. Calculate the equilibrium constant KP based on the results obtained in pa
(a) How far would the charge go before it comes to a stop? (b) Now let us say that instead of a constant E-field on the -x direction, that another charge q lies ahead of our moving charge at a dista
After equilibrium the object is removed from the hot water and placed in 200 grams of water at 0 degrees celsius. what is the final temperature of the object?
The rate constant for a reaction at 40.0 C is exactly three timesthat at 20.0 C. Calculate the activation energy for the reaction.
If the potential on the outer surface of the membrane is +68.0 mV greater than that on the inside surface, how much charge resides on the outer surface?
Nernst Equation: A test solution contained 2 mL of 0.10 M Ag+. A silver strip was dipped into the test solution, and a cell potential of 0.0592 V was measured against an Ag/Ag+ (1.0M) reference h