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A chemist needs a solution that contains sodium ions, aluminum ions, and sulfate ions. Around the lab she finds a large volume of.355 M sodium sulfate solution and a bottle of solid aluminum suphate
1.00 M aqueous solution of NaOH, a 0.50 M aqueous solution of H2SO4, and a foam calorimeter were allowed to stand at a room temperature of 25.4oC until the temperature of all three reached 25.4oC.
A sample of 0.01 moles of I2 vapor is maintained at the 1.00bar and at 500K. Determine the entropy of this sample in units of J/K, calculating separately and labeling the translational, vibrat
Calculate the standard enthalpy and entropy change for this reaction, and the Ln of the equilibrium constant at 200degree Celcius.
Assume that methanol vapor behaves ideally. Methanol (CH3OH) has a vapor pressure of 203 mm Hg at 35 C. If the 5.00 g of methanol is sealed in a 10 L flask, what mass remains after equilibrium is e
The resulting solution has an osmotic pressure of 0.641 atm at the 25°C. Assuming that the organic compound is a nonelectrolyte, what is its molar mass?
Using 10.310kJ/K for C system and determine the heat of combustion in kJ/mol. for chicken fat. If the accepted value for the heat of combustion for chicken fat is 30.038 kJ/mol determine the percent o
In order for this reaction to take place, would the hybridization of any of the atoms need to change? If so, which atom, how, and why is it changed? Look at the following reaction: Carbonate + H+ i
Write down the net ionic equation, the spectator ions, explain what substance is reduced and why. Solid Mg is dropped into a solution of silver I Nitrate.
Determine how many grams of H2SO4 would be formed in the atmosphere? If 345 g SO2 escaped into the atmosphere and all the escaped SO2 were converted to H2SO4.
Calculate the order in which the analytic would elute from the RP-HPLC, acetylsalicylic, Benzoic acid and the salicylic acid. Explain the answer in a detail.
Gas Chromatography is a popular technique used to separate compounds. Explain what type of compounds can easily be separated with GC?
Determine how many grams of zinc metal are formed when a solution of Zn(NO3)2 is electrolyzed for 3.75 hours with a constant current of 19.7 amps?
A sample of potassium hydroxide of mass 9.670g was dissolved in the water and diluted to the mark in a 250.0ml volumetric flask. It was found that 21.56ml of this solution was required to reach the
Discuss how the above solution in part (a) functions as a buffer solution when the following are added to the buffer solution. No calculation required.
Calculate the energy of a photon of frequency 80.5 MHz; explain what frequency of radiation has photons of energy 1.77 x 10 to the negative19th power J? In what region of the electromagnetic spectr
Is it possible to manipulate the membrane to return to its original permeable state using electro chemical methods? The patch clamp technique was used to strengthen the Gram A membrane.
Determine the molarity of calcium chloride in the solution resulting from the addition of 100mL of 0.0500 M of calcium hydroxide to 200mL of 0.0500 M of HCl?
What is the molecular weight of the gas when a 0.397g sample of a gas occupies a volume of 275mL at10degrees Celsius and 365 torr.
At STP, the sample occupies a volume of1793mL. What is the true formula for the compound when a 2.08g sample of a gaseous compound contains 1.92g of carbon and 0.16g of hydrogen.
Calculate the proton acceptor? Why? After this solution has reached equilibrium: What species are present? What is their concentration?
Write down a balanced equation for its combustion to liquid water, carbon dioxide, and nitrogen. Urea, CO (NH2)2, is used as a fertilizer.
Determine the concentrations of Cd2+,Cd(CN)42- and CN-at the equilibrium when 0.50 g of cadmium(II) nitrate dissolves in the 500.0 mL of 0.50 M NaCN. The formation constant for the Cd(CN)42-&nb
What will be its temperature in degrees Celsius if the volume is reduced to 22.5L under 3.50 atm under pressure? A sample of gas occupies 30.0L at STP.
Determine the pH of a solution obtained by mixing the139mL of KOH with a pH of 12.66 and 293 mL of Ba(OH)2 with a pH of 11.79? Suppose that volumes are additive.