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Question one: A certain weak acid has, HA, has a Ka value of 8.3*10^-7. Calculate the percent of ionization of HA in a .10 M Solution.
Calculate the percent of ionization of HA in a 0.010 M solution.
Question two:
A 0.0120 solution of a weak acid (HA) has a ph of 3.27. Calculate the acid ionization constant (Ka) for the acid.
A sample of sodium reacts completely with 0.142 of chlorine, forming 234 of sodium chloride. What mass of sodium reacted?
Europium (Europium is a chemical element with the symbol Eu and atomic number 63 )crystallizes in a body-centered cubic lattice compute the unitcell edge length in pm if The density of Eu is 5.26 g/cm3..
Assuming that the calibration curve passes through the origin, what absorbance would be recorded for a solution with a Pb(NO_3_)_2_ concentration of 0.335 M.
Solid sodium iodide is slowly added to a solution that is 0.0050 M Pb2+ and 0.0050 M Ag+. [Ksp (PbI2) = 1.4 × 10-8; Ksp (AgI) = 8.3 × 10-17] Calculate the Ag+ concentration when PbI2 just begins to precipitate.
Compute the work of expansion(in Joules) accompanying the complete combustion of 1.0 grams of sucrose C 12 H 22 O 11 to CO 2 and (a) liquid water, (b) water vapour at 20 degrees Celsius when the external pressure = 1.0 atm
Calculate the molarity for: A.0.5g CO2 in 652 g of water. B. 56g of NH3 in 500 g of water. C. 3.21 g of NaOH in 3405 ml of water.
What is the molality of CrCl3 in a solution prepared by dissolving 75.2 g chromium(III) chloride hexahydrate in 250.0 g of water.
If 6.0 moles of ethene and 6.0 moles of hydrogen are introduced into a 2.0 L sealed vessel and allowed to equilibrate at 200ºC, what is the equilibrium concentration of the ethene
The delta G for the reaction is 2.60 kj/mol at 25 degrees C. The initial pressures are P H2 = 3.34 atm, P I2 = 0.024 atm and P HI = 0.24 atm.
If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 173-pound man?
how many moles of glucose C6H12O6 can be burned biologically when 10.0 mole of oxygen is available
A 2.89-L flask is filled with propane gas (C3H8), at 1.00 atm and -23.0°C. What is the mass of the propane in the flask?
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