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What is the mole fraction of ethanol, CH3CH2OH, in an aqueous solution that is 20.0% ethanol by mass?
0.150
0.144
0.0980
0.0892
0.208
the osmotic pressure produced by the solution was 0.138 atm . What is the molar mass of the protein(g/mol)?
Why is the catalyst Copper Chloride faster at the decomposition of hydrogen peroxide than Postassium Iodide and Lead Oxide
show the base-catalyzed condensation and dehydration products from aldol condensation of propanal
Calculate the equilibrium constant for the reaction
A mix contains 0.540 mol He (g) , 0.420 mol Ne (g) , and 0.050 mol Ar (g). Placed in 1 Liter container at 25*C.
If the volume of an unknown liquid is measured and found to be 6.510 L, what is the volume of the unknown liquid in milliliters?
Determine how long will it take for a sample of N2O5 to decay to sixty percent of its initial value?
Which combination of atoms is most likely to produce a compond with covalent bonds?a) K and Brb) Al and Sc) S
Sodium borohydride is a strong base as well as a reducing agent. Why would it be better to add the NaBH4 solution to a base-sensitive substrate
In the event of a severe and prolonged shortage of petroleum, suggest one alternative fuel that could be used for automobiles. What do you see as the advantages and disadvantages of your choice of alternative fuel?
Calculate the pH of each of the following solutions. (a) 0.115 M HONH2 (Kb = 1.1 10-8)
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
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