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what is steam distillation and why is it a preferred technique to purify high boiling liquids that are water-insoluble
if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
First ,2-chlorotoluene react with acetylchloride. then acylation product (an oil ) react with its corresponding carboxylic acid(aluminum(3) chloride)
Write the complete stepwise mechanisms for reactions below. Show all intermediate structures and all electron flow with arrows.
Calculate the pH of the final solution after 250 mL of a 0.157 mol dm-3 solution of HCl is added to 500 mL of a 0.103 mol dm-3 solution of NaCN (Ka HCN = 6.2 × 10-10).
The density of liquid oxygen at its boiling point is 1.14 kg/L , and its heat of vaporization is 213 kJ/kg . How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized?
What mass of potassium can be produced by the reaction of 215 g Na with 296 g of KCl?
Diacetylferrocene, In the formation of diacetylferrocene, the product is always the one in which each ring is monoacetylated.
The solution is connected to a SCE referece cell (Esce = 0.241V) and a potential of Ecell= 1.169 V is measured. determine the concentration of BrO3 (aq) in the solution
54.0 mL of a 1.40 M solution is diluted to a volume of 218 mL. A 109-mL portion of that solution is diluted using 183 mL of water. What is the final concentration.
A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
Draw the Lewis structure for C1F 2 + (small s at bottom and small + at top) What are its electron-pair and molecular geometries? decribe the bonding in the molecule in terms of hybrid orbitals.
prepare 10 ml of solution that represents a 4 fold dilution of the stock solution
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