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a). What is the pH of a buffer made by combining 0.025 moles potassium acetate with 0.015 moles acetic acid in 200 mL of water?
b). What is the new pH if 0.5 mL of 10 M HCl is added to the buffer in part a?
What would you expect to happen to the sizes of these bubbles if they were connected with a tube without bursting either bubble?
A test tube containing a mixture of KCl, KClO3, and MnO2 having a total weight of 23.584 g was heated to compose the KClO3. After heating, the mass was found to be 22.347 g.
A piston has an external pressure of 6.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.580 liters.
If 5.00 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
A bicycle tire is filled with air to a pressure of 75 psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire
the enzyme acetylcholinesterase,which has a turnover rate of 25,000 s-1. Calculate how long it takes the enzyme to cleave one acetylcholine molecule.
A gas absorbs 0.0j of heat and then performs 35.6j of works. the change in interval energy of the gas is
an aerosol spray can with a volume of 441 ml contains 3.09 g of propane gas as a propellant. what volume would this
If an industrial diamond contained only carbon, how many atoms of carbon would be found in a 1.80-carat diamond
The rate constant of a reaction is 5.35*10^-5 L/mol.s at 195 C and 6.90*10^3 L/mol.s at 258 C. What is the activation energy of the reaction
The order of skunks is caused by chemical compounds called thiols. These compounds, of which butanethiol(C4H10S) is a representative example, can be deodorized by reaction with household bleech (NaOCl) according to the following equition:
Epsom salt is a hydrate with a formula MgSO4*X H2O, where x indicates the number of moles of H2O per mole of MgSO4, After a 1.687 g sample of the hydrate is heated, 0.824 of MgSO4 remains. How many molecules of water are present per formula unit o..
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