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If toluene(density 0.87) were used to extract ethylene bromohydrin (density 2.41) from an aqueous solution,
(a) could you be certain that the organic solution would form the upper layer?
(b) by what test could you identify the non-aqueous layer?
Two gas tanks are linked by a connecting tube of negligible volume with a valve. One contains 15 L of nitrogen at 7.2 atm of pressure. The other contains 8.3 L of helium at 4.1 atm of pressure.
what products may have been formed during the combustion of the gas?
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
Will a precipitate of magnesium flouride form when 200.0 milliliter of 1.9x10^-3mol/Litre MgClsubnumber2 solution is added to 300.0 milliliter of 1.4x10^-2mol/Litre NaFsolution?
The specific heat capacity of a certain monatomic solid is 0.392J*k^-1*g^-1. The chloride of this element (XCl2) is 52% chlorine by mass.
Calculate the final temperature of the water and ice together once they have reached thermal equilibrium. The specific heat capacity of water is 4.184 J/g°C. Assume no heat is lost to the surroundings during the process
one of the lines in the emission spectrum of sodim has a wavelength of 590 nm. what is the frequeuncy of this line?
Salicylic Acid and Acetic Anhydride --> Acetylsalicylic Acid and Acetic Acid C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O2 Salicylic Acid - 1.75g 1.6 equivalents of acetic anhydride for every equivalent of salicylic acid.
To determine the freezing points of distilled water, 1m glucose, 1m NaCl, 1m CaCl2. Use the freezing point of the pure water as a baseline to determine deltaTf for each of the solutions
What is theoretical yield of nitrogen monoxide in grams d. How many moles of excess reactant remain e. What is the % yield of the reaction
Calculate the specific heat capacity of a sample liquid if this 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 degree Celsius to 70 degree Celsius?
Calculate the fraction of space that is occupied by packing spheres in the (a) simple cubic, (b) body-centered cubic, (c) face-centered cubic (close packed) structures
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