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What mass of N2 gas was collected? At 20º C, the vapor pressure of water if 17.5 torr. A sample of N2 gas was collected over water at 20º C at a total pressure of 1.00 atm. A total
What is the vapor pressure at 20C above a solution that has 85.5g of sucrose and 75 g of urea [CO(NH2)2] dissolved per kg of water when the vapor pressure of pure water at 20C is 17.5 torr.
Explain why can methyl orange or phenolphthalein be used for an HCl-NaOH titration, but only phenolphthalein is suitable for acetic acid-NaOH titration?
Initially at 20 C and 1 atm pressure, a sample of benzene is subjected to a pressure of 11 atm at 50 C. assuming α and β to be constant, identify the percentage change in volume of the b
Identify the percentage change in the volume exhibited by an ideal gas initially at the 20 C and 1 atm pressure then subjected to a pressure of 11 atm at 50 C.
The time of efflux of H2O through Ostwald viscometers 1.52 minutes. For the same volume of an organic liquid of density 0.800 g/cc the time is 2.25 minutes.
Determine the velocity of the falling sphere when a sphere of radius 5 x 10-2cm and density of 0.90 g/cc falls at constant velocity through a liquid 1.00 g/cc and viscosity of 1.00 poise.
Calculate the E0 for the total reaction as well asΔG0 and K at 298K . Consider the reaction: 2H2 + O2 --->2H2OGiven the half reactions:
Determine the band pass (Δλ) that this grating could produce for green light, λ=500nm in 1st order (m=1) a grating is ruled with 500 lines/mm or d=2.0μm if the slit width is &
Determine the numbers of grams must be dissolved in the 250 ml of a solution to produce an absorbance of 1.1? The formula weight is 93 g/mol when the molar absorptive of a substance is 3.7 x106.
Explain would you expect the activation energy for catalyst reaction to be greater than, less than, equal to that of anuncatalyzed reaction?
If 50.0 ml of a 0.050 M KI is mixed with the 25.0 ml of 25.0 ml of water and a 0.750 MFe+3, explain what will the concentration of each component be after mixing (before any reaction takes place)ass
What was this gas and how was it produced when you first added the NaBH4 to the benzoic, gas bubbles most likely evolved from the reaction mixture.
The chemists spread a thin film of certain inert material over the surface of water to cut down the rate of evaporation of water in reservoirs in the water conservation.
What would be the expected final temperature if 5.50 g calcium chloride is dissolved in 50.0 mL of24.7 oC water. The text tells us that ΔHsolution for calcium chloride is -82.8
Explain does the K for this system have a large or small value Explain how the equilibrium is affected by the addition of the soluble salt NaB
Determine the pH of a solution which is having the 2.65 g Ba(OH)2in 735 mL of aqueous solution? Assume that the Ba(OH)2is totally dissociated.
Write down the rate law for this reaction. Determine the rate constant k. Determine the rate if the concentration of A is 0.6M
Write down the overall equation for the reaction.Find out the reaction intermediates.Find out the catalyst.
Calculate the probability of locating a particle in a one-dimensional box among the L/4 and 3L/4, where L is the length of the box? Suppose the particle to be in the lowest leve
The freezing point and the boiling point of sulfur dioxide are -72.7oC and - 10oC (at 1 atm), respectively. The triple point is 1.65*10-3 and -75.5oC atm, and its critical point is at 157oC and 78 atm
Determine the hydroxide-ion concentration of a solution if its hydronium-ion concentration is around 1 x 10^-5 mole per liter? Determine the pH of the solution.
Explain what info you would need to calculate which one of these three acids would need the most NaOH to reach a phenolphthalein endpoint.
Write down the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:
Determine ΔU for the process. Assume the gas behaves as a van der Waals gas under these conditions when a sample of 2.0 mol of N2 (Cv, m= 1.5R) is initially at 100 bar and 301.15K. The sample