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What are the three common functional groups in organic chemistry that are readily ionized by adjusting the pH of the aqueous solution during an extraction?
A sample of He gas was found to effuse 6.3 times faster than an unknown gas. What is the molecular weight of the unknown gas
Oxalic acid (H2C2O4) is a useful primary standard for standardizing solutions such as potassium permanganate (KMnO4). In a particular standardization experiment 29.00g of oxalic acid, is titrated with 243.00mL of permangante solution
Assuming ideal behavior, calculate the mole fraction of toluene in the solution.
The pH of an aqueous weak acid solution is 6.20 at 25 degree celsius. Calculate the Ka for the acid. The initial concentration of the acid is 0.010M
A student is asked to prepare a buffer solution at pH=8.60 using one of the following weak acids HA (kA=2.7*10^-3), HB (Ka = 4.4*10^-6) and HC (Ka = 2.6 *10^-9).
Draw the products that correspond to syn addiction of Br2 to trans cinnamic acid and those that correspond to anti addition.
The heat of vaporization (delta)Hvap of carbon tetrachloride (CCl4) at 25 degrees C, is 39.4 kj/mol. If 1 mol of liquid carbon tetrachloride at 25 degrees C has an entropy of 216 J/K, what is the entropy of 1 mol of vapor in equilibrium with the l..
When CH3OH(l) boils at its normal boiling point, does its entropy increase (+) or decrease (-)? Use the (+) or (-) in the box. (b) What is the entropy change
What is the molar solubility of silver bromide in a solution that also contains 0.050M Ag+ ions at 25 °C? The Ksp of AgBr is 5.4 × 10-13.
what mass is grams of potassium chloride is produced if 100. g of potassium chlorate decompose according to the following equation? 2KClO3>>> 2KCl+3O2
using henderson hasselbalch calculate the ph of .5 L of 2.0M solution of nitrous acid, HNO2 that also contains 140g of nano2 (MM=70g/mol)
how much will the temp change when 740grams of Iron, stainless steel , aluminum absorbs 1210 cal. of heat energy
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