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Calculate the total vapor pressure of an ideal solution made by mixing 0.500 mol of ether (C4H10O) with 0.250 mol of ethanol (C2H6O) at 20 degrees Celsius.
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g)+13O2(g) -> 8CO2(g)+ 10H2O(l)
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA-, A2-) at pH 8.44
a 0.5224-g sample of an unknown monoprotic acid was titrated with 0.0998M of NaOH. the equivalence point of the titration occurs at 23.82ml. Determine the molar mass of the unknown acid
Consider radiation of wavelength of 4000 Angestroms, at a temprature of 3000 K. using a rayleighs- jeans law, calculate the energy per unit volume per energy wavelength?
During World War II, tritium (3H) was a component of fluorescent watch dials and hands. Assume you have such a watch that was made in January 1944. If 16% or more of the original tritium was needed to read the dial in dark places, until what year ..
the pH of a saturated solution of a metal hydroxide MOH is 9.30. calculate the Ksp for the compound
Correlation of structure with the melting point - What structural aspect of these 18-carbon fatty acids can be correlated with the melting point?
Calculate the mole fraction of each gas. Be sure each of your answer entries has the correct number of significant digits.
A sample of nickel is heated to 99.8 degrees C and placed in a coffee cup calorimeter containing 150.0g water at 23.5 degrees C. After the metal cools, the final temperature of metal andwater mixture is 25.0 degrees C.
In an experiment where aniline is reacted with acetic anhydride to form acetanilide, how do you calculate the theoretical yield of acetanilide?
What's the mass of sodium oxide produced if 1.5 g of sodium reacts with excess gaseous oxygen. Write the balanced equation.
Calculate q when 15.8 g of ice is cooled from -22.4 degrees Celsius to -71.0 degrees Celsius (C ice = 2.087 J/g*K)
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