What mass of substance must evaporate
The heat of vaporization of CCl2F2 is 289 J/g. What mass of this substance must evaporate in order to freeze 165 g of water initially at 23°C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g·K.
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A half-cell, made by dipping a silver wire into 0.05 M aqueous AgNO, at 298 OK, develops a half-cell potential of +0.740 volts. What is the standard half-cell (Eo) for silver?
How would the MW value be affected if the gas was not pure butane C4H10 but 10 mole percent propane C3H8 and 90 mole percent butane C4H10?
Natural lithium is 92.58% lithium-7, with atomic weight 7.016, and 7.42% lithium-6, with atomic weight 6.015. What is the observed atomic weight of lithium as it occurs in nature?
An alpha particle with kinetic energy 15.0MeV makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude
Determine the entropy production in each component. Assume a boundary temperature of 50°F on the cold side and Thigh on the hot side. Note that if each component is possible, then the entire cycle is possible.
A 0.6407 g sample containing chloride and iodine ions gave a silver halide precipitate weighing 0.4430g. this precipitate was then strongly heated in a steam of Cl2 gas to convert the AgI to AgCl. the precipitate weighed 0.3181g. calculate % of ch
Upon the addition of another mole of B to the solution, the vapor pressure increasing to 347mmHg. Calculate the vapor pressures of pure A and B at 83 degrees C.
In an ideal vapor compression refrigeration cycle using R-134a, the adiabatic capillary tube drops the pressure from 1.4 MPa to the evaporate level. Its inlet is saturated liquid.
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