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Find the pH during the titration of 20.00 mL of .1000 M butanoic acid CH3CH2CH2COOH (kA = 1.54E-5), with .1000 M NaOh solution after the following additions of titrant. a. 20.40 mL b. 26.00 mL
A solution that is made by combining 125mL of 0.050 M hydrofluoric acid with 50.0mL of 0.10 M sodium fluoride.
Estimate the average concentration of methylene chloride. Look up the TL V or the 1WA for methylene chloride and consider how the: evaporation might be performed.
You decide to use gel filtration. This works brilliantly and you determine that your protein is 80kDa at the same time. But wait! The gene that corresponds to HMD predicts a protein of only 38kDa. What are two potential causes of this discrepancy?
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
Methane has a Henry's Law constant (k)of 9.88 × 10-2 mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH4 will dissolve in 3.00 L of benzene if the partial pressure of CH4 is 1.48 atm?
What is the mass, in milligrams, of mercury in 1.00 kg lake trout that just meets the Northern American standard of 0.50 ppm Hg?
When NaOH is added to the reaction mixture, Cu(OH)2 does not immediatly precipitate. What else in the reaction mixture reacts with NaOH before Cu(OH)2 is formed?
The standard enthalpy of formation for ammonia NH3 is -46.2kj/mol. How much heat is released/absorbed when 1 mole of N2 is reacted with three moles of H2 to produce ammonia
2NO2(g)has come to equilibrium, the concentration of NO2 is 2.2 x 10-3 mol/L. Calculate the molar concentration of O2 at equilibrium.
Natural gas is a mixture of many substances, primarily CH4,C2H6,C3H8 and C4H10. Assuming that the total pressure of the gases is 1.34 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each g..
Compute the final temperature of the solution assuming no heat lost to the surroundings .the solution has a specific heat capacity =4.18 J/°C·?
What is the molarity of sodium acetate. What is the pH of the solution. Please show the steps. (note pK = 4.76) Use log10 for all calculations.
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