120 students took a chemistry test. 22 scored a 90.55 scored an 80, 12 scored a
70, 11 scored...
Chemistry, 01.11.2019 21:31 palcochran1313
120 students took a chemistry test. 22 scored a 90.55 scored an 80, 12 scored a
70, 11 scored a 60, and 20 scored a 50. calculate the weighted average of the test
scores.
Answers: 2
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Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear
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The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
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)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
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