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When 1.28 mg of hydrogen peroxide decomposes in the presence of manganese dioxide to form water and oxygen, how many miligrams of each are produced?
Consider the cell described below: Al/Al3+ (1.00M)//Pb2+ (1.00M)/Pb Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by .60 mol/L. Assume T=25 C
Give the reaction scheme, showing the products formed (before hydrolysis), when one equivalent of ethylmagnesium bromide is treated with one equivalent of 5-hydroxy-2-pentanone
Important information about Proteins, A globular protein in aqueous surroundings contains the following amino acid residues; phenylamine, methionine, glutamate, lysine, and alanine.
Compute the concentrations of all species in a 0.900 M sodium sulfite solution. If it is given that the ionization constants for H2SO3 are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
A white solid remains in centrifuge tube after acetone extraction-it fizzes when hydrochloric acid is added suggesting sodium carbonate was formed- How did it form? Write a balanced equation for the formation?
If 8.00 kJ of heat are added to 200. g of water at 20.0 C, what is the final temperature of the water?
A 26.0-g sample of ice at -11.0°C is mixed with 123.0 g of water at 90.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
How many L of N2 gas are produced at STP when the airbag inflates if the airbag contains 132g of sodium nitride?
The decomposition of 3.32 g CaCO3 yields 1.24 g CaO. What is the percent yield of this reaction? CaCO3(s) -> CaO(s) + CO2(g)
What molar ratio of sodium acetate to acetic acid (NaAc/HAc) should be used in preparing a buffer having a pH of 4.35? (Ka = 1.8×10-5 for acetic acid.)
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg.
Tris is widely used in a biochemical laboratory. Its acid dissociation constant is 8.32 x 10^-9. You have available at your lab bench a 0.1 M solution of Tris in its protonated form, 0.1 M solution of HCL and NaOH,
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