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At 25 °C, water has an equilibrium vapor pressure of 23.8 mm Hg. If 2.500 g of water is sealed in an evacuated 10.0-L flask and heated to 25 °C, what mass of water will evaporate? Assume any liquid remaining in the flask has a negligible volume tube with 3 gas chambers: 1st gas chamber: P = 1.00 atm, 5.00 L 2nd gas chamber: P = 2.00 atm, 3.00 L 3rd gas chamber: P = 3.00 atm, 2.00 L
calculate the mass of KHP(KHC8H4O4) needed to react completely with 25 mL of a 0.10 M NaOH solution?
Calculate the pH of a solution containing 25.00 mL of 0.12M formic acid (Ka=1.7x10^-4) to which the following amounts of 0.10M NaOH have been added:
A solution is prepared by dissolving 3.00 g of an unknown nonelectrolyte in 20.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -6.4 oC
Suppose 50 mL of 0.020 M Hydhrochloric acid solution was mixed to 50 mL of 0.20 M acetic acid solution (Ka of acetic acid, CH3COOH, = 1.8 x 10-5). Determine the approximate pH of the mixture.
Show how the following compounds could be synthesized from benzene a. benzoic acid b. aniline c. m-chloroenzenesulfonic acid d. m-chloroethylbenzene e. m-brombenzonitrile f. benzyl methyl ether g
what is the change in enthalpy for 2.854 moles of the liquid?
400 M formic acid (HCOOH) solution freezes at -0.758 degrees C. Calculate the Ka of the acid at that temperature. (hint: assume that molarity is equal to molality. Carry out your calculations to three sig figs and round off to two for Ka).
the electronic configuration [Ar]3d2. Using the extended Hund's rules, determine the term symbol of the lowest energy state of Ti2+.
if you started a ride with ice packs that held 1600g of frozen water at 0 degree celius, and the temperature of the water at the end of the ride is 32 degree celius, How many calories of heat energy were absorb
What mass of Aluminum is produced when 0.5 mole of Al2S3 is completely reduced with excess H2?
can someone please answer these questions regarding the endo and exo products formed through two different transition states in the reaction between furan and maleic anhydride.
How many moles of carbon monoxide react with 1 mole of oxygen gas according to the balanced chemical equation?
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