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Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br? and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may represent C9H7NH+ as HB+ and C9H7N as B.) 0.113 mol L?1 C9H7NHBr (aq) 0.104 mol L?1 HBr(aq) 0.122 mol L?1 NaOH(aq) (1a) Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required. (1b) (4 marks) What is the buffer capacity of the resulting solution? (The buffer capacity is the number of moles of NaOH that must be added to 1.0 L of solution to raise the pH by one unit
What is the Lewis structure of the covalent compound that contains one nitrogen atom, one hydrogen atom, and one carbon atom? Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
Use values of Ksp for Zn(OH)2 and Kf for Zn(OH)4-2 (page 330) to predict if a precipitate will form when you prepare a solution which contains 0.010 M Zn2+ and 1.0 M NaOH.
What can you conclude from these results? -- Need 4 of them because I'm lost. Also, how can I estimate the useful range of a pH meter?
What mass of LP gas is necessary to heat 1.3 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 16% of the heat emitted by the LP gas combustion goes to heat the water.
Calculate the vapor pressure of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6, at 20°C. Assume the solution is ideal. The vapor pressure of pure benzene is 74.6 torr at 2..
Concrete used in road construction is reinforced using steel bars in a grid, known collectively as "rebar." After many years, rebar will begin to corrode, and the concrete will weaken.
If you didn't have a computer or data system available, how would you measure the area of the peak. After all, someone's DUI may hinge on this measurement, and you may have to defend your calculation in court
Conjugated diene addition reaction, a) When HCl is added to 1,3-butadiene either 3-chloro-1-butene or 1-chloro-2-butene forms. Which product is more stable? Explain.
A 771 mL gas sample at STP is compressed to a volume of 242 mL, and the temperature is increased to 31?C. What is the new pressure of the gas in Pa
calculate the molarity of acid (or base) remaining in solution when 20mL of 0.400M HNO3 is added to 16.3mL of 0.258M NaOH?
At 2000C Kc is 2.4^3 for 2NO N2+O2, the initial concentration of NO is .170M what is the equilibrium concentration of NO?
Suppose that after delivery several drops of the water cling to the inner wall of the pipette (because the pipette is dirty). How does this technique error affect the reported density of water?
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