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In a pure sample of which of the following is there no hydrogen bonding? a. CH3NH2 b. (CH3)2NH c. (CH3)N d. none, pure samples of all these have hydrogen amines
Propanoic acid, HC3H5O2, ionizes in water and has a Ka=1.34x10^-5. What is value of Kb for the propanoate ion
What is the value of the equilibrium constant for Haber process at 298K if the equilibrium concentration are as follows:
If the titrant has a molarity of 0.2750 M and there are 5.00 mL of analyte present, what is the molarity of the analyte
Sodium azide (NaN3) is sometimes added to water to kill bacteria. Calculate the concentration of all species in a 0.010 M solution of NaN3. The Ka value for hydrazoic acid (HN3) is 1.9 * 10-5.
Using this information and the Clausius-Clapyron equation (P = const•exp(-?Hvap/RT)), calculate the vapor pressure of 3 nm droplets of mercury.
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
The background section describes why you want the bleach to be far in excess of the dye. State how much greater the bleach should be to be considered in large excess. If the due is 1 x 10-5 M how much can the bleach be diluted before you no longer..
The system H2 (g) + I2 (g) ?? 2 HI(g) is at equilibrium at a ?xed temperature with a partial pressure of H2 of 0.200 atm, a partial pressure of I2 of 0.200 atm, and a partial pressure of HI of 0.100 atm.
The absorbance of the reference and the sample solutions match when the pathlength is 2.10 cm. What is the concentration of iron in the well water? For each solution, the zero is set with a blank.
A spherical fat cell has a diameter of 2.47 micrometers. The fat cell contains three copies of the protein azurin. What is the molar concentration of azurin within the fat cell?
An unknown metal with a mass of 100 g was heated to 100 C and placed into 30.0 g of water that had a temperature of 20.2 C. The final temperature of both substances
110 micro mol of 206^Pb. Assuming that all the 206^Pb comes from decay of the 238^U, estimate the rocks age (in yr).
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