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What mass of water (in grams) is contained in 2.9 L of the vapor above this solution at 55 C? The vapor pressure of pure water at 55 C is 118 torr. (Assume a van't Hoff factor of 1.9 for NaCl.)
If a process is carried out at constant pressure P and the volume V of the system decreases, then V is (negative, positive) and the work w is (negative, positive, zero).
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 5.15 of the base.
Using a device similar to a mass spectrometer, a sample of an ancient wooden object was found to have a ratio
How many grams of water can be cooled from 45c to 15c by the evaporation of 65g of water? (The heat of vaporization of water in this temperature range is 2.4kj/g. The specific heat of water is 4.18j/k*mol .)
.1500g of an unknown sample was passed through a column of Amberlite-IR-200(+) resin and titrated with .2050M NaOH. If 9.75mL of titrant was required to reach phenolphthlein endpoint,
Calculate the sodium ion concentration when 80.0 mL of 3.2 M sodium carbonate is added to 25.0 mL of 2.3 M sodium bicarbonate. Calculate the sodium ion concentration in M
Find t what temperature is it necessary to have twice as many atoms in the ground state as in the excited state at 16.4 1/cm of c atoms The degeneracy of the ground state is 1 and the first state degeneracy is 3
the equation of line determined from a Beers law plot is y=0.195x+0.4, what is the resistance of an unknown water sample if the assumed concentration is 1.8ppm. please show your work.
Explain how you would prepare 100.0mL of a solution, using pure solute and water, that is 0.050 M in sodium hydrogen phosphate.
A gas occupies 10.0 L at 44.1 psi and 27 degrees C. What volume will it occupy at standard conditions
A fixed quantity of gas at 29C exhibits a pressure of 745 torr and occupies a volume of 4.44 L. (a) Calculate the volume in L the gas will occupy if the pressure is increased to 1.86 atm while the temperature is held constant.
a 4.40 g piece of solid co2 dry ice is allowed to vaporizechange to gas in a ballon. the final volume of balloon is
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