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How much water is produced in the burning of C7H16
It takes 46.8 hours for nitrogen-filled balloon to shrink to a quarter of its original volume by effusion though a very small hole. If the same balloon had been filled with helium,
What is the driving force for losing a proton as the last step in electrophilic aromatic substitution
Ethyl chloride , a substance used as a topical anesthetic, is prepared by reaction of ethylene with hydrogen chloride: C2H4(g)+HCl(g)?C2H5Cl(g) Delta H degrees = -72.3 kj. What is the value of delta E (in kilojoules) for the reaction.
adding sodium hydroxyde in the purification of a solid by recrystallization experiment?
The expressions for the P-, Q-, and R-branches, assume that the moment of inertia of the molecule is the same in the excited vibrational states as in the ground state. Derive expressions for the positions of the lines without making these assumpti..
A suitable storage place must be geologically stable long enough for the activity of plutonium-239 to decrease to 0.1% of its original value.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
What is the net ionic equation ,including phases, for the reaction of aqueous silver nitrate with aqueous potassium chloride.
How much heat is absorbed by 15.5g of water when its temperature is increased 20.0C to 50.0C?The specific heat of water is 4.184J/(g.C)
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
A mixture of two miscible solvents that may be used as the solvent for a recrystallization experiment would be which of the following
what external pressures have moved mainstream medicine to accept alternative therapies? have any alternative therapies
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