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A particular drain cleaner contains NaOH. What is the value of [OH-] in a solution produced when 50.0g of NaOH dissolves in enough water to make 250mL of solution?
What is the HCl concentration of 33.7 mL of 0.350 M NaOH is required to titrate a 30.0 mL sample of the acid?
A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9 C and 0.930 atm, was dissolved in sufficient pure water to form 250.0 ml of solution. What was the pH of that solution.
Describe the physical origins of linewidths in absorption and emission spectra. Do you expect the same contributions for species in condensed and gas phases
A reaction mixture initially contains 0.56 atm CO2 and 0.32 atm CO. Determine the equilibrium pressure of each gas if Kp for the reaction at this temperature is 2.25.
0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)
Determine the partial pressure of each gas in a mixture of gases using Dalton's law of partial pressures
What combination of a molecular base (that is a neutral compound, not an ion!) and a salt of the conjugate acid of that molecular base should you select to prepare a buffer solution that would maintain a pH of 9.00? For full credit, explain
Describe how you would prepare each of the following aqueous solutions. - 230 g of a solution that is 0.60 molal in Na2CO3 starting with the solid solute. - 1.30 L of a solution that is 18.0% Pb(NO3)2 by mass. (density = 1.16 g/mL)
Determine the mass of precipitate (in grams) that forms when 213.8 mL of 0.132 M CaCl2 solution is reacted with excess AgNO3 solution.
A student creates a coffee cup calorimeter for lab. The coffee cup contains 30 mL of water at a temperature of 55.5 °F. He then adds 65.4mL of water, at 165.5 °F, into the coffee cup. The final temperature of the coffee cup is 120.3 °F.
A 2.30 L sample of O2(g) was collected over a liquid at a total pressure of 785 torr and 25°C. When the O2(g) was dried (vapor of that liquid removed), the gas had a volume of 1.86 L at 25°C and 785 torr.
1-bromobutane was added to a solution of sodium iodide in acetone. One of the possible side products of this reaction is dibutyl ether. Provide the mechanism of thus molecule.
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