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Dry air near sea level has the subsequent composition by volume N2, 78.08 percent O2, 20.94 percent Ar, 0.93 percent CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. Ever since volume is proportional to the number of moles present mole fractions of gases can be expressed as ratios of volumes at the same temperature and pressure.Compute the concentration of each gas in moles per liter at 0°C.
Calculate the atomic mass of neon (Ne) which is composed of three naturally occurring isotopes with the following natural abundances and masses
What information is gained from the UV-VIS data. Compound does not contain a conjugated system.
what is different about about the bond that forms between carbon and oxygen and the bond that forms between oxygen and
An unknown carbohydrate compound has the empirical formula CH2O. A solution consisting of 0.515 g of the carbohydrate dissolved in 1.717 g of acetic acid freezes at 8.8°C
a gas mixture consists of N2, O2, and Ne where the mole fraction of N2 is .55 and the mole fraction of Ne is .25. If the mixture is at STP in a 5.0 L container, how many molecules of O2 are present.
calculate the masses of the solids you must measure out to prepare 100ml of 0.025m kno3.....you must include the waters
hydrogen atoms have an absorption line at 1.026x10-7m.what is the frequency of the photons absorbed and what is
A 500 mL buffer solution containing 0.2M fomic acid and 0.25 sodium formate is mixed with 100ml of 0.05M HCl. What will be the pH of this new solution
a protein subunit from an enzyme is part of a research study andneeds to be characterized. a total of 0.160 g of this
If the gas is at 24 degrees Celsius and 1.0 atm, what mass of helium is in the blimp?
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCL, what is the limiting reagent in this reaction. you may need to calculate mmoles of sodium benzoate first.
A layer of iron(III) oxide forms on the nail, increasing the nail's mass. How much oxygen has reacted with the iron if the mass of the nail has increased to 5.89 g?
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