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How many moles of OH- are required to raise the pH of 4.00 liters of 25 mM glycine, pH 1.90, to a final pH of 9.70? Assume that the addition of OH- does not change the volume of the solution. The pKa's of glycine are α-COOH group 2.34 and α-NH3+ group 9.60.
A coil with an inductance of 16.8 H and a resistance of 5.5 ? is suddenly connected to a resistanceless battery with an ? = 194.0 V. What is the rate at which thermal energy is appearing
An aluminum wire having a cross-sectional area equal to 5.00 x 10-6 m2 carries a current of 8.00 A. The density of aluminum is 2.70 g/cm3. Find the drift speed of the electrons in the wire
Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. what minimum speed is required
In famous magician trick. The magician lies on bed of nails and a sledge hammer is used to pound on an anvil on her chest. The nails will not pierce her skin. Explain why?
a mass attached to a spring oscillates according to the equation xt 24sin16t 0.50 where x is in cm and t in seconds.
A 180 g block on a 49 cm-long string swings in a circle on a horizontal, frictionless table at 74 rpm.
A galaxy cluster in Ursa Major has a recessional velocity of 15,000 km/s. Using 73 km/s/Mpc for Hubble's constant, find the distance to the galaxy cluster.
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, frictionless axis through its center.
a 327 kg satellite is in circular orbit around the earth and moving at a speed of 2.61 kms. how much work must be done
A 22 kg dog is standing on the edge of a stationary, frictionless turntable of rotational inertia 95 kg·m2 andradius 1.97 m. The dog walks once around the turntable. What fraction of a full circle does the dog's motion make with respectto the ground?
When an inflated balloon is placed in a refrigerator it is noted that its volume reduces, use the kinetic theory of gases to explain this observation.
A magnetic field is perpendicular to the plane of a singleturn circular coil. The magnitude of the field is changing,so that an emf of .80V, What emf and current are induced in the square coil
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