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How many grams of solid potassium hypochlorite should be added to 0.500 L of a 0.224 M hypochlorous acid solution to prepare a buffer with a pH of 8.338 ? Answer in grams potassium hypochlorite ----------------- How many grams of solid ammonium bromide should be added to 1.50 L of a 0.196 M ammonia solution to prepare a buffer with a pH of 9.820 ? Answer in grams ammonium bromide ----------------- How many grams of solid sodium fluoride should be added to 1.00 L of a 0.243 M hydrofluoric acid solution to prepare a buffer with a pH of 2.146 ? Answer in grams sodium fluoride
A reaction is performed in a vessel attached to a closed-tube manometer. Before the reaction, the levels of mercury in the two sides of the manometer were at the same height
After completing the calculations below, sketch the pH curve for the titration of 25.0 mL of 0.150 M solution of a weak base, B (Kb = 6.8 x 10^-5), with 0.150 M HI. Indicate the pH
1. Assume that, for a laboratory assignment, you need 15 mL of 2.5M potassium hydroxide (KOH). All you can find, however, is a bottle of concentrated potassium hydroxide with a strength of 16M. Clearly explain, using calculations as necessar..
The hydrogen atom contains 1 proton and 1 electron. The radius of the proton is approximately 1.0 fm (femtometers), and the radius of the hydrogen atom is approximately 53 pm (picometers).Calculate the volume of the nucleus and the volume of the atom..
The solubility of a slaked lime, Ca(OH)2, in water is .185g/100mL. What volume of .00400 M HCl is needed to neutralize 10.0mL of a saturated Ca(OH)2 solution
How many sodium ions are needed to provide the free energy to transport a molecule of glutamic acid from a concentration of 0.1 mM outsie the cell to 20mM inside the cell given a concentration of Na+ of 140 mM outside the cell to 10mM inside the c..
Draw the two stereoisomers formed for the reaction of (E)-2-pentene with bromine in carbon tetrachloride.
allowed to expand adiabatically against constant Pext = 10 atm. Compute the final T, ?U, and ?H for this process. Use Cv = 20.8 J/mol*K and assume the gas is ideal.
This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample
Question- Show the major product of the following reaction. Be sure to show any Cis/trans type of stereochemistry ch3ch=cyclopentene + HI -->
Explain why is the chemiluminescence even more pronounced with the ferricyanide/hydrogen peroxide mixture
About Enthalpy
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