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Calculate the pH of a buffer solution that is 0.12 M lactic acid (HC3H5O3)and 0.1 M sodium lactate (NaC3H5O5). Ka for lactic acid = 1.4 x 10-4.
How much ice (in grams) would have to melt to lower the temperature of 352 mL of water from 26 C to 4C? (Assume the density of water is 1.0 g/ml.)
The angular / azimuthal quantum number equals 6, how many distinct magnetic quantum values are possible? (m sub l)
Which of the following is true about any R enantiomer. A. it has a + rotation b. it has a - rotation c. it is a mirror image of the S enantiomer is it A only B only A and C or B and C
Aqueous copper (II) reacts with aqueous iodide ion to yeild solid copper (I) iodide and aqueous iodine. write the balanced ionic equation and identify the oxidiziton and reducing agent
Xenon can be the central atom of a molecule by expanding beyond an octet of electrons. Draw Lewis structure for the following xenon compound.
A generic salt, AB, has a molar mass of 243 g/mol and a solubility of 8.90 g/L at 25 C what is the Ksp of this salt
Identify the group of elements that corresponds to the following generalized electron configuration
The combustion of gasoline produces carbon dioxide and water. Assume gasoline to be pure octane and calculate the mass (in ) of carbon dioxide that is added to the atmosphere per 1.7 of octane burned
A gaseous mixture of O2 and N2 contains 37.8% nitrogen by mass. what is the partial pressure of oxygen in the mixture if the total pressure is 325 mmHg
If you are given a 0.31 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced
how to transform a primary amine into corresponding alkyl
Evaluate the efficiency for a compression ratio of 10:1. Assume that, in state A, V = 4.00 dm3, p = 1.00 atm, andT = 300 K, that VA = 10VB , pc /pb = 5, and that Cpm = 7/2 R
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