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Suppose you want to do a physiological experiment that calls for apH 6.5 buffer. You find that the organism with which you areworking is not sensitive to the weak acid H2X(Ka1=2 x 10-2 and Ka2=5.0 x10-7) or its sodium salts. You have available a 1.0Msolution of this acid and a 1.0M solution of NaOH. How much of the NaOH solution should be added to 1.0L of the acid to give a bufferat pH 6.50? (Ignore any volume change).
If 10 g of chlorine gas is reacted with a solution containing 25 g of sodium bromide, which substance is limiting and calculate the mass of mass of bromine produced
if a sample containing 1.00 ml of nitroglycerine density 1.592 gml is detonated how many total moles of gas are
Explain how the electron configuration of calcium can be determined by changes in I.E. (specifically, the large changes, for example between electron 18 and 19).
The volume percentage of CO2 in a mixture of that gas with N2 was determined by bubbling the mixture at 1.00 atm and 25*C through a solution of 0.0100 M NaHCO3 and measuring the pH. If the equilibrium pH was 6.50, what is the volume percentage of ..
The _______ of a titration occurs when the indicator changes color.
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10-5.
Hydrocarbon mixtures are used as fuels. What mass of CO2 gas is produced by the combustion of 197.1 g of a mixture that is 62.5 % CH4 and 37.5% C3H8 by mass
what is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of
what is the percent yield of a reaction in which 266 g phosphorus trichloride reacts with excess water to form 134 g
what is the concentration (in mole/L or M) of Cu2+ and NO3- in the final solution. Remember your significant figures. If there is an impurity of Cu2+ in the water you are using to perform the dilutions, what type of error is this associated with t..
Calculate the number of molecules inside the cell, which is 2.2 ?m long and 1.2 ?m in diameter.
How many grams of sodium bicarbonate and sodium carbonate, respectively, are needed to make 3 liters of 0.075 M buffer, pH 10.500
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