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A crude organic compound containing traces of sulfuric acid is dissolved in dichloromethane, and then "washed" with water. Will the organic compound be dissolved in the upper layer? Breifly explain
Demonstrate that if 100mL of solution of a5.0 g of A in water were extracted with two 25 mL portion of ether,a smaller amount of A would remain in the water than if the solution was extracted with o
Astudent spots an unknown sample on a TLC plate and develops it in adichlormethane solvent. Only one spot develops with an RF value of 0.95. This single test does not verify that the unknown substan
Acolorless unknown substance is spotted on a ZTLC plate And developed in the correct solvent. The spots do not appear when visualization with at UV lamp or iodine vapors is attempted.
A 9.0 kg object undergoes an acceleration of 2.3 m/s2. (a) What is the magnitude of the resultant force acting on it?
The sledge moves a distance of 19.8 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. What is the tension of the rope? How much work is done by
How does the absorption of carbon dioxide from the atmosphere affect the molar concentration of a standardized sodium hydroxide solution? Explain with assistance of an equation.
What is the balanced net ionic reaction for the neutralization reaction between solutions of sodium hydroxide and hydrochloric acid?
What is the magnitude and direction of the force on that wire due to the earth's magnetic field?
In terms of the number of proton signals that will be present, explain how and why the proton NMR spectrum of the product of today's reaction would appear different from that of the starting material.
Aside from the 0-H alcohol (H-Bonded) absorption at 3600 - 3200 cm-1, what other IR stretching frequencies would you anticipate finding on the Infrared spectrum of the product?
How many moles of hydrogen is present in 38.6 mL of H2 collected over water at 25 degrees C and at a pressure of 748 torr? Please give details on how to solve!
A Fraunhofer diffraction pattern is produced on a screen 91 cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 6300 times the wavelength .Calcul
What is the mass of a piece of magnesium which produces 29.1 mL of hydrogen gas collected over water at 22.5 degrees C and at a pressure of 749 torr when dissolved in excess hydrochloric acid?
A 6.25 kg particle with velocity = (3.96 m/s) - (8.87 m/s) is at x = 1.60 m, y = 5.36 m. It is pulled by a 7.65 N force in the negative x direction. About the origin, what are (a) the particle's ang
How does the extraction procedure differ when the organic phase is (a) less dense than water and (b) more dense than water?
Mothballs are composed primarily of the hydrocarbonnaphthalene (C10H8). When 1.025 g of naphthalene is burned ina bomb calorimeter, the temperature rises from 24.25 degrees C to32.33 degrees C.
Two insulating spheres have radii 0.300 cm and 0.500 cm, masses 0.200 kg and 0.700 kg, and uniformly distributed charges of -2.00 µC and 4.50 µC. They are released from rest when their c
Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length L2, how do L1 and L2 compare if wire 1 is made from copper and wire 2 i
What advantages does ligroin have over n-pentane as are crystallization solvent ? what advantages does ethanol have over n-octanol as are crystallization solvent ?
If the train is initially moving at a speed of 60 km/h, in how short a distance can the train be stopped at constant acceleration without causing the crates to slide over the floor.
At first glance, the fuel cell may seem to be an ideal power source for automotive use. Clearly the logistical problems outweigh the advantages at this time. List some of the problems.
Explain how a balloon, which is perfectly spherical when filled with gas that obeys the ideal gas law (also the gas will not diffuse out of the balloon nor will any air molecules diffuse into the ba
Calculate the angular separation of the second order bright fringes between light of wavelength 600 nm and 612.4 nm. Answer in units of mrad.
What is the molarity of an acetic acid solution(HC2H302) if it requires 37.5 mLof 0.75 M KOH to titrate 15.0mL of the acetic acetic acid?