What volume increase is necessary for all the water
A vessel contains 0.90 g liq H2O in equilibrium with water vapor at 30C. At this temperature, the vapor pressure of H2O is 31.82 torr. What volume increase is necessary for all the water to evaporate?
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Why should samples be tightly packed in capillary tubes ( to find melting points ) and what are 2 problems with performing MP with wet product?
Suppose a box contains 4 balls labeled 1,2,3,4. Three balls are randomly selected from the box with replacement. Let X= the smallest of the 3 numbers on the balls chosen. Find the probablity mass function (pmf) for X.
A 104 W lightbulb has a resistance of about 12 when cold (20°C) and 137 when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0060 (C°)-1.
At ordinary body temperature (37 degrees Celsius) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/L. Air is approximately 78 mol % N2.
Two masses m1 and m2 are connected via a massless, unstrecthable string over a massless pulley. Mass m2=72N rests on the surface of an incline making θ=34 degrees. What must be the mininmum value of m1 that will make m2 begin to move? Assume
Arrivals during the evening at a hospital emergency room are assumed to follow a Poisson distribution. The rate on Saturday evening is 2.5 per hour and on Sunday evening is 0.5 per hour.
The miners trapped in the San Jose copper mine in Chile are 700 meters below ground. Calculate the work needed to raise one 70 kg miner to the earth's surface, assuming the acceleration due to gravity is constant and 9.802 m/s^2.
The plates are in a vacuum and are 6 cm apart. A plastic sphere with a mass of 3.0 x 10^-12 kg and a charge of -0.035 microcoulombs is placed on the lower plate. (a) What is the electric field between the plates?
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