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How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.2 L of 0.13 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.61?
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, the temperature of the solution went up to 37.1C.
Determine the degree of unsaturation of an organic compound with the molecular formula C7H6O2. interpret the value found in term of functional group of the compound.
The rate constants of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described
Treatment with 3-hexene-2-ol with concentrated HCl gives a mixture of two prodcuts, 2-chloro-3-hexene and 4-cholro-2-hexene. Write a reaction mechanism that explains how both products are formed.
A quantity of N2 is kept in a 12.8 L contianer at a temperature of 42 C and at pressure of 4.7 atm. how many grams of N2 are in the container?
The following five beakers, each containing a solution of sodium chloride (rm NaCl, also known as table salt), were found on a lab shelf:
Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons.If the radius of a neutron is 1.0 × 10-13 cm, calculate the density of a neutron in g/cm3. (volume of a sphere = ) Assuming that a neutron star has the same dens..
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
Rank the enthalpy of solution from most exothermic to most endothermic. To rank items as equivalent, overlap them.
Complete the mechanism for the base-catalyzed racemization of the chiral ketone below by adding any missing atoms
Calculate the number of grams of urea that must be added to 150 g water to give solution whose vapor pressure is 2.5 mmHg less than that of pure water at 40 degrees C
For detection using Fluozin-3, what is the excitation wavelength that should be used. For Zincon detection of zinc and copper, what pH range agent do, and why would it be useful for metal detection
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