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For a solution of acetic acid in water prepared from 0.50 moles of acetic acid dissolved up to a total volume of 1.0 L, (a) calculate the pH and concentration of all species present assuming that the activity coefficients are equal to 1.0 for all species
A solution is made by mixing 15.5 g of NaOH and 73.0 mL of 0.150 M HNO3. Calculate the concentration of OH- ion remaining in solution.
A gas measures 10ml at 27degree celcius and 750mm of mercury what will be the mole of gas at 15degree celcius and 750mm of mercury
Calculate the Q for the water in Joules (c for water is 4.184J/g degrees celsius). Determine the Q for the metal in Joules based on your knowledge of conservation of energy. (you cannot use the Q=mcdeltaT equation, because you do not know the c fo..
a column of air with a pressure of 1.57 x 105 Pa and an area of 1.07 m2 and given that the acceleration due to gravity is 9.8 m/s2, what is the mass of the column.
Determine how you would make a 100ppb solution of riboflavin from a 50mg/L stock solution. Do the same for preparation of a 500ppb solution from a 50mg/L stock solution
When the ln( kE2 / kE1 ) is plotted vs. 1/T the resulting linear graph has the slope of - 4.8 and intercept of 6.1What is the difference in activation energies of the two mechanisms? For which mechanism are the reactive collisions more efficient?
Ideally what should the ratio between the three slopes (AlCl3 slope= 483.0 , CaCl2 slope= 421.4, and NaCl slope= 181.9) be? What are your actual experimental ratios?
Since phosphate ionization of 2.14, 6.86 and 12.4. you make stock buffer 500mM in 1L. You decide to make one stock pH 6.5 and the other ph 7.2 How many mmols of what type of phosphate componet do you add to each of these buffers?
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
Assuming that the appropriate volumetric flasks are available, describe how we would make these solutions: (a)175 mL of a 1.14 M solution of NH4Br in water (b)1.35 L of a 0.825 M solution of NaI in water
Write a brief discussion of the bond dipoles of iodomethane and the corresponding Grignard reagent.
A mixture of gases conssists of CH4 at a partial pressure of 143 mm Hg, N2 at a partial pressure of 469 mm Hg, and O2 at a partial pressure of 563 mm Hg
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