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1)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) (A) 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. (B) 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.)
Draw a structural representation to describe the H-bonding responsible for the high boiling point of ethylamine and the structural representation of the H-bonding present when ethylamine dissolves in water.
Why does the non aqueous reaction of pyridine and SnCl4 produce a white precipitate
What is the amount of ammonia (as nitrogen) needed to sustain 1 gram/L of cells in an engineered bioreactor b. What is the amount of phosphorus needed to sustain the same concentration of cells in the reactor?
How much heat is required to warm 229 g of ice from -47.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
what is the concentration of oygen dissolved in water at 20 degrees celsuis in equilibrium with a gas mixture at 0.81 atm.
A red laser pointer emits light with a wavelength of 650 nm. What is the energy (in J) of a photon of light of this wavelength?
How many grams of Oxygen gas are required if It is desired to inflate a baggie with 842 milliliters volume by filling it with O2 gas at 1.21 atm pressure and a 306 K.temperature ?
water's heat of fusion is 80 cal/g and is specific heat is 1.0 cal/g degree celcius. Some velmobile set have been designed to hold ice packs inside their cushions.
We have 500 mL of a solution with Ba^(2+)=0.10M. How many grams of LiF must be added to begin precipitation of BaF2? The Ksp of BaF2 is 1.7 x 10^(-6)
A mixture of 3.50 moles of B and 5.25 moles of C in a 20.0 L container is allowed to come to equalibrium. What is the equalibrium concentration of A?
Please explain which of the following aqueous solutions has the strongest ion-dipole attractions: 0.3 M Na3PO4 .1 M NiF2 .2 M Rb2CO3 0.01 M Sr(OH)2 and .03 M ScBr3.
Calculate the length in km of a row containing 1 mole of hydrogen atoms laid side to side if diameter of a hydrogen atom =.212 nm?
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