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Using the henderson hasselbach equation if [H+] =1.55x10^-4 and the ratio [A-]/[HA] = 0.52, what is the Ka of the solution? Is this consided to be a strong or weak acid? Give a possible identity of the acid. Explain
how do you think the appropiate enzyme would have affected the reaction (degree of completeion,yield,stereochemistry
What volume would a 0.0236-mole sample of helium gas would occupy at a temperature of 24°C and a pressure of 0.750 atm?
need to dissolve CaCl2 in water to make a mixture that is 31.0% calcium chloride by mass. If the total mass of the mixture is 405.5 g, what masses of CaCl2 and water should be used?
How many carbon atoms does the sample contain?
What is the pH at the point during a titration when 22 mL of 0.200 M HCl has been added to 33 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3. Answer in units of pH
You have a sample that consists of 8.2 (+ or -)o.1mL of aqueous 239Pu solution. You measure two 10mL aliquots by liquid scintillation counting and get 3211.4 cpm and 3315.2 cpm, respectively.
Two gas tanks are linked by a connecting tube of negligible volume with a valve. One contains 15 L of nitrogen at 7.2 atm of pressure. The other contains 8.3 L of helium at 4.1 atm of pressure.
how many mL of chlorine gas are required to produce 0.50L of hydrogen chloride gas(HCl) at constant temperature and pressure?
a perfect gas undergoes isothermal compression which reduces its volume by 2.20 L. the final pressure and volume of the gas are 3.78x10^3 torr and 4.65 L, respectively
a pound of coffee beans yields 70 cups of coffee (4cups=1qt) how many milliliters of coffee can be obtained from 1 g of coffee beans
Draw the Newman projection formulas for the conformations of 2- methylbutane that are obtained by looking down the C2-C3 bond. Rank then oorder of relative stability
Assuming the structures above gave molecular ion abundances of 12, 70, and 23(dexchlorpheniramine, 9-aminoacridine and pilocarpine, respectively), what abundances would you expect for the M+1 and the M+2 peaks for each structure?
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