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Solvent: Finding the Kf ValueQuestion: A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
Calculate the molar mass of a gas that has a density of 0.232 g/L at 156 oC and 222 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
The density of air at ordinary atmospheric pressure and 25 0C is 1.19 g/L. What is the mass of air, in kg, in a room that measures 12.5 ft by 15.5 ft by 8.0 ft?
Five metal rods (Copper, Iron, Nickel, Tin and Zinc), at room temperature, of equal mass are place in a 100 oC water bath. Which metal will reach 80 oC first.
If 84 g of CO reacts to produce 63 g of CH3OH, What is the percent yield of CH3OH?Answer in units of % ?
a block of aluminum with the volume of 96.5 g absorbs 65.3 J of heat. If the initial temperature is 31.2 degrees celcius, what is the final temperature.
Determine the partial pressure of Ar, argon gas in the flask and A flask is filled with 1.20 of argon Ar gas at the temperature of twenty five degree Celsius.
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness.
A 1.0 L buffer solution is 0.250 M LiC2H3O2 and 0.050 M HC2H3O2 . Which of the actions will destroy the buffer? (a)adding 0.050 moles of LiC2H3O2(b)adding 0.050 moles of HCl(c)adding 0.050 moles of HC2H3O2(d)adding 0.050 moles of NaOH.
The distribution coefficient, k = (conc. in hexanes/ conc. in water), between hexanes and water for solute A is 7.5 . What weight of A would be removed from a solution of 10g of A in 100mL of water by a single extraction.
Estimate the value of the equilibrium constant at 685 K for each of the following reactions. Delta H and S for BrCl(g) is 14.6 kJ/mol and 240.0 J/ mol * K, respectively. 2 NO_2(g) > N_2O_4(g.
CHEM 354 Extended Problems, The variation of EMF for the cell below with temperature is shown in the graph below.
Determine the minimum mass of Sodium bicarbonate or sodium hydrogen carbonate that should be added to the spill to neutralize it?
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