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A 25.0 mL sample of 0.125 molL-1pyridine (Kb=1.7×10-9)is titrated with 0.100 molL-1HCl.
Calculate the pH at 10 mL of added acid. Express your answer using two decimal places.
Calculate the pH at 40 mL of added acid. Express your answer using two decimal places.
Household wiring made of aluminum wire with cross section area 3.1 x10^-6 m2 carries a current of 4.5 A. The bulk resistivity of aluminum is 2.82 x10^-8. What is the power loss over 5.2 m of wire?
A sphere with mass 0.3 kg and radius 0.05 cm is rolling without slipping along a horizontal surface at a speed of 10 m/s. What height does the sphere come to rest
A converging lens has a focal length of 12.5 cm . For each of two objects located to the left of the lens, one at a distance of s1 = 18.5 cm and the other at a distance of s2 = 8.00 cm, determine the following
A mass m is confined to move along a straight line in a potential well given by U(x) = - Eo/(1 + (x/a)2)3, Write the equation for the force acting on the particle
question1a small container of water is placed on a carousel inside a microwave oven at a radius of 13.5 cm from the
Two astronauts, each having a mass of 88.0 kg, are connected by a 10.0 m rope of negligible mass. What is the new rotational energy of the system
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 20.0 cm, Find the electric field just inside and just outside the paint layer
What voltage is required to store 6.8 x 10-5C of charge on the plates of a 6.0 µF capacitor
a kickers extended leg is swung for 0.4 s in a counterclockwise direction while accelerating at 200 degs2. what is the
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, What is the direction of the third piece just after the explosion
Two identical point charges (q = +9.20 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.660 m. Determine the speed of the test charge when it reaches the center of the square
two points on a string are observed as a traveling wave passes them. the points are at x1 0 and x2 1 m. the
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