How to calculate the heat of fusion of water
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 J/mol K and that the heat capacity of H2O (s) is 37.7 J/mol K, calculate the heat of fusion of water at -10 Celcius.
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A solution of acetic acid isprepared in water by adding 11.1g. of sodium acetate to a volumetric flask and bringing the volume to 1.0L with water. The final pH is measured to be 5.25.
The book weighs 32 N. The coefficient of static friction between his hands and the book is 0.45. To keep the book from falling, what is the magnitude of the minimum pressing force that each hand must exert?
A Mercedes-Benz 300SL (m = 2000 kg) is parked on a road that rises 15° above the horizontal. (a) What is the magnitude of the normal force?
Find the mean and varience of X. Use the general formulas for mean and variance and check results using the formulas u = np and o2 = npq.
A 25.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.5 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.
A dr. has performed 4 heart transplants, and 2 of the patients survived for more than 5 years. She thinks that the probability of a patient surviving for 5 years or more is .2.
Estimate the strain energy per unit volume. Assuming the shear modulus of Fe is 86 GPa and the Burgers vector is 0.248 nm.
Traveling at a speed of 17.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.800. What is the speed of the automobile after 2.10 s have e
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