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Calculate the pH at the equivalence point in the titration of 50 ml of 0.10 M methylamine with a 0.20 M HCl solution.
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.3*1.0 ft. , what is the average thickness of the sheet in meters?
mercury nanometer contains 2 g of Ar. A burner heats it to Pext. at 760 torr. What is the Temperature of the gas in the bulb when the total volume is 3 L and H=76mm
When hafnium metal is heated in an atmosphere of chlorine gas, the product of the reaction is found to contain 62.2 percent Hf by mass and 37.4 percent Cl by mass.
What is the mass of water in 1m^3 in air having a termperature of 32C and relative humidity
What is the resultant pressure if 3.7 mol of ideal gas at 273 K and 1.97atm in a closed container of constant volume is heated to 446 K.
A reversible adiabatic expansion of NO2 (g) from an initial V=20dm^3 and an initial T=300K to a final P=1bar. Find Vf, Tf, and the change in entropy for both the system and surroundings.
describe three distinctly different reactions of furan which confirm the relatively smaller aromatic resonance stabilization of furan compared with thiophene and pyrrole (reactions which lead to non aromatic products)
The DNA sequence below is from the interior of the coding strand sequence for West Nile Virus RNA polymerase.
calculate the amount of heat required to heat a 46 sample of ethanol from 10.0 to 18.0. specific heat capacity of
a 1.30 m solution of citric acid h3c6h5o7 in water has a density of 1.10 gcm3. calculate the mass percent molality mole
the dissolution of in water is endothermic with 33.5. if you prepare a 1.00 solution of beginning with water at 22.5
It takes 54.0 J to raise the temperature of an 11.7 g piece of unknown metal from 13.0C to 25.0C}. What is the specific heat for the metal?
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