Chemistry, 19.02.2022 21:10 jholland03
A student is asked to explain the osmotic function of the cell membrane using a working model. Which model should the student use?
A. A solid rubber ball placed in a beaker containing a concentrated salt solution.
B. An egg in it's shell placed in a beaker containing a concentrated sugar solution.
C. A solid, impermeable plastic ball containing a sugar solution placed in a beaker containing a more concentrated salt solution.
D. A semi-permeable plastic bag filled with a sugar solution placed in a beaker contain a more concentrated sugar solution
Answers: 2
Chemistry, 22.06.2019 07:10
Which of these conditions most likely produces an unstable isotope?
Answers: 2
Chemistry, 22.06.2019 10:50
A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.
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?
Answers: 2
Chemistry, 22.06.2019 16:30
4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:
Answers: 1
A student is asked to explain the osmotic function of the cell membrane using a working model. Which...
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