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Question- If the Ka of a monoprotic weak acid is 4.5 x 10^-6, What is the pH of a 0.14 M solution of this acid?
quinine in a 1.664 g antimalarial tablet was dissolved insufficient 0.10 m hcl to give 500 ml of solution . a 20.00
a mixture of helium and neon weighing 5.50g occupies a volume of 6.80 l at 300 k and 1.00 atm. calculate the
A mixture of CaCO3 and CaO weighing 0.693 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.436 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
the fired crucible is handled with oily fingers before its mass measurement. subsequently in part b.1 the oil from the
The pH of an acid solution is 5.14. Calculate the Ka for the monoprotic acid. The initial acid concentration is 0.010M.
you have a 12 volt lead storage battery in your car you can find the equations for the redox reactions in your text
What constant current (in amperes) is required to produce aluminum by the Hall-Heroult
Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate Imagine that andA, B are cations and X,Y Z,, and are anions, and that the following reactions occur
in 2 solutions of equal volume and mass but with solutes of different identities we learned that the solution that has
For 0.51 M HCN (Ka=6.2 x 10-10), mark the majorand minor species found in the solution. H+ HCN CN- H2O OH- Now calculate the pH of 0.51 M HCN solution. (Ka=6.2 x 10^-10)
Calculate the formula weight of CuSO4 . Use the following atomic weights: Cu is 63.5463 g/mol, S is 32.0666 g/mol, and O is 15.99943 g/mol. Your reported answer should have the correct number of significant figures and units.
Question- What is the density in (g/L) of a sample of nitrogen gas that occupies a volume of 6.78L at a pressure of 2.43 atm and temperature of 40.6 degrees Celsius
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