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Explain why, during the recrystallization of p-dibromobenzene, the turbity of the hot solution was used as an indicator for the ratio of ethanol to water used.
Why can we use a water-ethanol mixture but not a water-hexane mixture as recrystallizing solvent?
Nitric oxide has a density = 1.782 g/L at the temperature of 12.64 degree celsius and pressure of 670.7 mm Hg determine the mass percent of Sulfur dioxide?
draw a sheme o both reactions inlcuding structures and names of all possible products of monosubustitution only. Choose one reaction and provide appropriate mechanism including all resonance strucutres.
the mass of water is 92.6 grams, the initial temperature of the water is 58.9 degrees celsius, the mass of teh liquid nitrogen added to the water is 57.1 grams, and the final temperature after the liquid nitrogen has vaporized is 29.6 degrees cels..
Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids
the reaction of no with cl2 is2 no cl2 2 nocluse reactant molecules to write appropriate elementary reactions that
What kind of hybrid orbitals are found on the central atom in ICl3. Answer a. dsp3 b. sp2 c. sp3 d. sp4 e. sp3d2
5 Stars for showing work. A galvanic (voltaic) cell consists of an electrode composed of zinc in a 1.0 M zinc ion solution and another electrode composed of gold in a 1.0 M gold(III) ion solution
Why does a piece of potato break down a 100% hydrogen peroxide solution faster than lets say a 75% hydrogen peroxide and 25% water
In the laboratory a student finds that it takes 33.1 Joules to increase the temperature of 11.5 grams of solid lead from 20.3 to 39.9 degrees Celsius.
a cylinder measuring 3.4 cm wide and 4.0 cm high is filled with gas. The piston is pushed down with a steady force measured to be 275 kpa
What is the formula for a bicarbonate salt using X to represent any +1 charged cation. Same question for the formula for a carbonate salt.
A gas mixture is made by combining 7.2g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 92.04L. What is the molar mass of the unknown gas in g/mol, and identify the unknown gas
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