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Explain what major respect is NO2 a more important species than SO2 in terms of participation in atmospheric chemical reactions?
Decide whether to use acetic acid/acetate or formic acid/formate. Prepare .100 L of a pH 3.74 buffer with a total buffer strength of 0.100 M Calculate the volumes of acid and base necessary to make each buffer.
A 3.00-L flask contains nitrogen gas at 25°C and 1.00 atm pressure. What is the final pressure in the flask if an additional 2.00 g of N2 gas is added to the flask and the flask cooled to -55°C?
A solution is prepared by dissolving 195 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C
What is the ppm concentration? The molar extinction coefficienet is 87,000 M^-1cm^-1 and the molecular weight is 407.98 g/mol. The density of water is 1.00 g/mL.
the molar heat capacity of a gas at constant pressure is 18.7j mol-1 k-1. what is the heat capacity of 9.4 moles of
Two chromatographic columns (GC) are being compared for use in an analysis. One is a 50 cm long packed column that is 5 mm in inside diameter (ID), with a stationary phase that is 1um thick on the support packing and has a total of 25,000 theoreti..
Calculate the maximum concentration of fluoride ion that could be present in hard water. Assume the only anion present that will precipitate is the calcium ion. (CaF2(s) Ksp,25C=4.0x10^-11)
a 3 cubic meter tank contains 1.5 kg of a gas at 27oc and avacuum pressure of 81 kpa. what is the density and
Calculate the pH of the solution that results when 20.0 mL of 0.200 M formic acid is mixed with 25.0ml of 0.200 sodium formate solution
Determine the absolute error and relative error in ppm CaCO3 associated with a single standardization and titration of an unknown CaCO3 solution
when a metal was exposed to light at a frequency of 4.63*10^15 Hz, electrons were emitted with a kinetic energy of 3.10*10^-19 J.
If 10.2 g of ammonium carbamate is introduced into a 0.500 L container, what is the total pressure inside the container at equilibrium
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