How much heat energy must be removed to effect cooling
An iron skillet weighing 1.37 kg is heated on a stove to 184°C. Suppose the skillet is cooled to room temperature, 21°C. How much heat energy (in joules) must be removed to effect this cooling? The specific heat of iron is 0.449 J/(g · °C).
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A solution is prepared by mixing 51.0 mL of 0.20 M Pb(NO3)2 with 73.8 mL of 1.8 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6x10^-5.
A 15 kg box slides d = 4.0 m down the frictionless ramp, then collides with a spring whose spring constant is 160 N/m. The angle of the ramp is 30 degrees. What is the maximal compression of the spring?
Explain the difference between good faith dealing and unconscionability. How does the UCC deal with each? What obligations concerning good faith dealing does the UCC impose on merchants and non-merchants?
They want to dock, which means they have to arrive at the same position at the same time with zero velocity. (a) What should the initial velocity of the second spacecraft be? (b) What should be its constant acceleration?
Suppose the skillet is cooled to room temperature, 21°C. How much heat energy (in joules) must be removed to effect this cooling? The specific heat of iron is 0.449 J/(g · °C).
Identify three (3) marketing environment forces that will impact the cereal manufacture company Quaker. Describe each force and analyze why & how it will impact the product/service. The marketing environment forces?
An object at rest explodes into three pieces. Two of them are equal in mass and break off at an angle of 85.2° to each other, both with a speed of 30.6 m/s. The last piece has 4 times as much mass as each of the other pieces. What is the magni
The moment of inertia of the student plus stool is 3.0 kg·m2 and is assumed to be constant. The student then pulls the objects horizontally to 0.50 m from the rotation axis. Find the new angular speed of the student.
Describe three major changes in law enforcement that must occur in order for the U.S. to do a better job collectively of preventing terrorism. Defend your choices.
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