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For lab this week i need to separate a mixture of caffeine and Phenacetin using Acid-BAse Extraction. What reagent should i use for the separation of components by extraction of the dichloro methane layer?
When 1.7 g sodium nitride is heated it forms sodium metal and nitrogen gas. How many grams of each are formed?
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone (in kg) is required to completely neutralize a 4.3 billion liter lake with a pH of 5.5?
Determine the number of electron pairs (both bonding pairs and lone pairs) on the iodine atom in the following.
The volume of a mass of gas is 950 ml at 700 torr pressure. What volumw will it occupy at 350 torr,the temperature
a sample of a binary compound of boron and chlorine weighing 2.842 g occupies .153 L. this sample is decomposed to give 0.664 g solid boron and enough gaseous chlorine to occupy .688 L at the same temperature and pressure. determine the molecular ..
What is the gas pressure (in atm) inside a 1.69-L bulb that contains 0.9-g of Ne at a temperature of 34.1 C? Be sure to report the units as atm.
The flask was then shaken until the solution was uniform. A 45.0 \rm mL sample of this glucose solution was diluted to 0.500 \rm L. How many grams of glucose are in 100. \rm mL of the final solution
Carbonyl bromide decomposes to carbon monoxide and bromine. COBr2 (g) ↔ CO(g) + Br2 (g) Kc is 0.190 at 73?C. If you place 0.500 mol of COBr2 in a 2.00 L flask and heat it to 73 ?C,
A sample of nitrogen has a volume of 630 mL at a temperature of 49 degC. Assuming that the pressure is constant, what will be the volume when the temperature is 348.6 degC.
Why do we use an ethyl acetate/hexane mixture as a solvent in reaction of cyclopentadiene with maleic anhydride, rather than just pure hexane or ethyl acetate?
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
Write balanced reactions for the complete combustion of each fuel and use standerd enthalpies of formation to calculate the amount of heat relesed per kilogram pf the fuel.
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