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At 55.0 degrees C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 259 g of water? The vapor pressure of water at 55.0 degrees C is 118 mmHg. Assume complete dissociation of the solute. Express the pressure numerically in millimeters of mercury.
A gaseous mixture of O2 and Kr has a density of 1.192 g/L at 305 torr and 300. K. What is the mole percent O2 in the mixture
When a compound X, which contains only S, C, and H is burned, one volume of X yields 1 volume of sulfur dioxide, 3 volumes of carbon dioxide and 4 volumes of steam (all volumes measured at the same temperature and pressure). What is the formula of..
A gasous mixture of O2 and Kr has a density of 1.104 grams per liter at 435 torr and 300 K. What's the mole percent of O2 in the mixture?
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows.
How many grams of glucose are in 100. rm mL of the final solution?
An interstitial alloy prepared from two metals. metal A with the larger atomic radius has a hexagonal closed-packed structure. What if the formula(for example:A2B,AB,AB2)of the alloy if atoms of metal B occupy the following?
Benzoic acid, 1.25g , is reacted with oxygen in a constant volume calorimeter to form H2O(l) and CO2(g) at 298 K. The mass of the water in the inner bath is 1.40×103g . The temperature of the calorimeter and its contents rises 2.83K as a result of..
Write a balanced the rmochemical equation for the reaction with an energy term in kJ as part of the equation.
In the Balmer-Rydberg equation, what value of is used to determine the wavelengths of the Balmer series?
when 31 mL of 0.200 M HCl has been added to 39 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3
A sample of oxygen that occupies 1.00x10^6mL at 575 mmHg is subjected to a pressure of 1.25 atm. What will the final volume of the sample be if the temperature is held constant?
A solution is composed of ethanol and water. The solution density is 0.964 g/mL. The partial molar volume of ethanol and water is 52.0 mL/mol and 17.0 mL/mol respectively. What is the composition of liquid by mass
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