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Given a solution of 0.200 M aniline, C6H5NH2 (aq), and a solution of 0.100 M HCl (aq), how would you prepare 100.0 mL of a buffer solution with a pH of 4.75? pKb = 9.13 for C6H5NH2 (aq). What are the steps to solving this?
React cis-2-butene with O3 in the presence of a Zn catalyst. What product or products are formed. Draw the product or products. If you react trans-2-butene in the same manner, will you get the same products as with the cis isomer. Explain
The heat of combustion of ethane C2H6 is 1560 kJ/mol. What is the heat of combustion of ethane in kJ per gram
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse
A 29.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Explain In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, Explain what is the oxidizing agent
A scuba diver 40 ft below the ocean surface inhales 50.0 mL of compressed air mixture in a scuba tank at a pressure of 3.00 atm and a temperature of 8 degrees C
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.
500 ml of 0.150m sodium hydroxide is mixed to 595 ml of 0.200m weak acid determine nbspthe ph of the resulting buffer
The rays of the Sun that cause tanning and burning are in the ultraviolet portion of the electromagnetic spectrum. These rays are categorized by wavelength: So-called UV-A radiation has wavelengths in the range of 320-380 nm, whereas UV-B radiatio..
The standard enthalpy of reaction, DH°rxn for C2H2(g) + 2 H2(g) ® C2H6(g) is -311.5 kJ mol-1. Determine the value of DE°rxn for this reaction
A sample of nitrogen gas is collected over water at a temperature of 23.0 degrees Celcius. What is the pressure of the nitrogen gas if atmospheric pressure is 785 mm Hg?
As a technician in a large pharmaceutical research firm, you need to produce 200 mL of 1.00 M a phosphate buffer solution of pH = 7.06. The pKa of H_2PO_4}^- is 7.21. You have 2.00 L of 1.00 M KH_2PO_4 solution and 1.50 L of 1.00 M K_2HPO_4 soluti..
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