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Explain the percent concentration of a solution is a ratio of the amounts of dissolved solute and solution, expressed as a percentage. The percent concentration of a solution can be written usually as %concentration=amountofsoluteamountofsolutionÃ100% Depending on the situation a percent concentration might be computed for mass/mass, volume/volume or mass/volume.
Compute the mass percent of a solution that is prepared by adding 46.9g of NaOH to 303g of H2O.
A fixed amount of gas at 35oC occupies a volume of 10.0 L when the pressure is 876 torr. Calculate the pressure in (torr) when the volume is reduced to 7.98 L at constant temperature of 35oC
What mass of silver chloride will be recovered if excess sodium chloride is added to 500 mL of solution containing 10.79g of Ag+?
what is the composition of vapor of a pentane-hexane solution that has a vapor pressure of 373 torr at 25 degree celcius? Given is Pure Hexanes and pentanes vapor pressure at 25 degrees celcius. Pentane - 511 torr. Hexane -150 torr.
Calculate the pH of the solution that contains following compounds. Some relevant Ka values are Ka(CH3COOH)=1.7 X 10 ^-5, Ka(HNO2)=7.2X 10^-4, and Ka(NH4+) = 5.6 x 10^-10.
A student dehydrated 10.0 g of 2-methyl-2-butanol with %50 sulfuric acid and obtained 6.50 g of products. Calculate the theoretical yield and the percent yield.
you have determined a gc spectrum for your sample oil. you find 3 peaks. from determination of peak area you find that
Calculate the wavelength of light required to remove an electron from a ground state hydrogen atom.
calculate the approximate concentration of the solution in mol/kg and determine the volume change of the ballon when it ascends from 1 atm pressure to 240 torr pressure ?
Draw the major organic product formed by reaction of 3-hexyne with the following reagent: Cl2 (1mol)
Calculate the molar mass of an unknown molecular compound mixed with solid camphor, C10H6O, heated and then cooled giving the following data. Show all steps in calculation.
what is the age of a bone fragment from an archaeological dig if the bone shows an average of 2.5 radioactive events
Explain how many joules of thermal energy are required to heat a 6000 gallon swimming pool from a cool 58 degree F to a comfortable 67 degree F
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