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Problem- Consider a solution containing 0.100 M fluoride ion and 0.126 M hydrogen fluoride. The concentration of hydrogen fluoride after addition of 5.00 mL of 0.0100 M HCl to 25.0 mL of this solution is _____ M.
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a student is examining a bacterium under the microscope. the e. coli bacterial cell has a mass of 1.00 where a
A 0.300 M solution of an acid, HZ, has a pH = 1.301. What is the value of the ionization constant, Ka, for this acid
Identify the group of elements that corresponds to the following generalized electron configuration
Problem- Calculate the difference between the change in enthalpy and the change in internal energy when 1.00 kg of gaseous methanol is oxidized to gaseous CO2 and H2O at 65 degrees Celsius. Assume ideal gas behavior.
The following reaction has achieved equilibrium. Predict the effect on the formation of phosphorous pentachloride (increase, decrease or no effect) for the stated changes to the system
A: 2-methyl-1-bromohexane B: 1-bromohexane which of the above compounds will react the fastest with NaI in acetone?
If the computer writes electron configurations in the form for Fe for example, [Ar]4s(2)3d(6) which we would write [Ar]4s23d6. Give the electron configuration for Cu2+
required to reach the first equivalence point of a solution of citric acid (H3C6 H5O7), how many ml of NaOH are required to completely neutralize this solution
Sulfur dioxide can be produced in the laboratory by the reaction of hydrochloric acid and sodium sulfite. The skeleton equation for this reaction is: Na2SO3 + HCl --> NaCl + SO2 + H2O
the pressure on a 625 ml sample of gas is changed from .925 atm to 1.45 atm. what is the new sample of gas?
How many grams of calcium chloride will be produced when 29.0 g of calcium carbonate are combined with 15.0 g of hydrochloric acid?
Individual bonds in a molecule are often polar, molecules as a whole also often are polar because of the ne tsum of individual bond polarities. Which of the following molecules is/are polar? SF4, CCl4, C2H2.
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