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principle involved in extraction?
which of the two layers that formed during extraction is the dichloromethane? explain your answer.
role of sodium carbonate in extraction of caffeine from tea leaves.
What mass of C4H6 in grams is consumed in the reaction below when 39.8 grams O2 (g) are also consumed? C4H6 (g) + O2 (g) ' CO2 (g) + H2O (g) (not balanced)
What is the molarity of aqueous silver nitrate if 50.00 mL of AgNO3 reacts with 25.0 mL of 0.100
Synthesizing ethers via acid-catalyzed condensation reactions has limited usefulness. The conditions (sulfuric acid and heat) are also conducive to elimination products. Clarification of Organic Chemistry
What is the density of a block of marble that occupies 350 cm3 and has a mass of 660 g?Answer in units of g/cm
A backpacker wants to carry enough fuel to heat 2.9 kg of water from 27 degrees C to 100.0 degrees C. If the fuel he carries produces 36 kJ of heat per gram when it burns, how much fuel should he carry? (For the sake of simplicity, assume that the..
Nitrogen (80 kPa), oxygen (21.0 kPa), carbon dioxide (0.03 kPa), and water vapor (2.0 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa.
If a reaction mixture contains only N2O and NO2 at partial pressures of 1.0 atm each, the reaction will be spontaneous until some NO forms in the mixture.
calculate (a)molality? (b)molarity of NaCl? (c) What is the mass/mass and remove the most loosely held e- from a gaseous atom in a ground state
does the HCl ionize the NH3 base? is the a conjugate acid or base, HCl is a strong acid, what happens when a strong acid and weak base are mixed?
A 54.7-g sample of aluminum at 95.0 oC is dropped into 35.0 g of water at 40.0 oC. What is the final temperature of the mixture? (specific heat capacity of aluminum = 0.89 J/goC; specific heat capacity of water = 4.184 J/g degreesC)
N2O4(g) + KCl(s) → NOCl(g) + KNO3(s) Find out oxidation number of each and find which one is reduced and which one is oxidized by Using oxidation number concept? Also write net ionic equation and ionic equation.
An automobile gasoline tank holds 47kg of gasoline. When the gasoline burns, 165kg of oxygen are consumed and carbon dioxide and water are produced.What is the total combined mass of carbon dioxide and water that is produced?
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