Chemistry, 14.09.2019 00:30 elijaahstepp041
A500 ml glass of liquid n-pentane at 283 k is removed from a refrigerator that is located outside on a very hot day in phoenix. the n-pentane slowly equilibrates to the ambient temperature, which is 110 °f. the process occurs at 1 bar. calculate the entropy change of the n-pentane, δsn-c5, the entropy change of the surroundings, δssurr, and the entropy change of the universe, δsuniv. neglect the heat capacity of the container. the normal boiling point for n-pentane is 309.2 k, liquid density is 626 kg/m3 , and heat of vaporization can be taken as 25.79 kj/mol. assume constant cp values ca be used, with a liquid cp value of 169 j/mol-k, and a vapor cp value of 126 j/mol-k.
Answers: 3
Chemistry, 22.06.2019 15:10
The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?
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Chemistry, 23.06.2019 04:00
What are the names of these two interactions with cattle and how do they differ from each other
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A500 ml glass of liquid n-pentane at 283 k is removed from a refrigerator that is located outside on...
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