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0.30 g of liquid ethanol (C2H5OH) is placed in a 4.7-L bottle. the bottle is sealed and placed in a refrigerator where the temperature is 0.0 degree celsius. How much liquid ethanol will be present in the bottle after liquid-vapor equilibrium is reached? The vapor pressure of ethanol is 10. torr at -2.3 degrees celsius and 40. torr at 19 degrees celsius.
If a customer replaces a 85 watt bulb with an 20 watt compact fluorescent bulb that lasts 5000 hours, how much less coal (lbs)will be used to generate the electricity that is saved?
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
Calculate the pH at the equivalence point for titrating 0.250 solutions of each of the following bases with 0.250 M HBr
A chemist wants to prepare a solution with a freezing point of 22.0°C and has 100.00 g of glycerol on hand. What mass of water should the chemist mix with the glycerol?
How many moles contain each of the following? 3.75 x 10^24 molecules CO2
Calculate approximately the value for the heat of sublimation of methane and calculate the pH for this solution
Determine ΔHreaction° for: 4H2O (l) + 2 NH3 (g) → 2NO2 (g) + 7H2 (g) using the following two equations: (1) N2 (g) + 3H2 (g) → 2 NH3 (g) ΔH1° = -184 kJ (2) 4NO2 (g) + 8H2 (g) → 2 N2 (g) + 8 H2O (l) ΔH2° = -196 kJ
A water desalination plant is set up near a salt marsh containing water that is 0.10 M NaCl. Calculate the minimum pressure that must be applied at 17°C to purify the water by reverse osmosis.
The Henry's Law constant (k) for carbon monoxide in water at 25ºC is 9.71 x 10-4 mol/(L•atm). How many grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm?
what volume of .2500M colbaat(III)sulfate is required to react completely with 5.00 grams of sodium carbonate?
A chemistry student needs 60.00 mL of chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48 g x cm^-3.
A student reacted 0.22 g of zinc (Zn) with excess hydrochloric acid (HCl) to generate hydrogen gas (H2).
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