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Describe how you would make 2L of a 0.1M glycine buffer, pH 9, using glycine and 1.0M NaOH. For glycine the pKa is 9.6.
Draw the structure of the one alkene which upon treatment with O2 followed by Zn and acid, would give rise to formaldehyde and cyclohexanone
The half life of the radioisotope^ 158,47Eu is 1.0 hr.the decay of a 16.0g sample of the isotope to 1.25g required how many hours
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2
The equilibrium pressure of H2 over solid uranium and uranium hydride, UH3, at 500 K is 139 Pa. Calculate the standard Gibbs energy of formation of UH3(s) at 500 K.
a sample of nitrogen gas occupies 1.55 l at 27.0 c and 1.00 atm pressure. what will the volume be -100 c and the same
find out the geometry using VSEPR theory, find out whether the molecule is polar, identify the hybridization for all interior atoms, and make a sketch of the molecule, according to valence bond theory, showing orbital overlap. COF2 (carbon is the ..
In the chemical kinetics experiment, describe how you plan to mix the dye and bleach to start the reaction and when you expect to start recording the time? Include the volumes of dye and bleach solution you intend to mix? How are you going to make..
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm. Calculate ?E, ?H, and w for these processes
three mole of aluminum metal react with a mole of solid iron(iii) oxide to produce two moles iron metal and a mole of solid aluminum oxide
If 66.5 ml of base is required to reach the second equivalence point, what is the concentration of the acid?
A compound contains merely carbon, hydrogen and oxygen. Combustion of 0.01068g of the compound yields 0.01601 g of CO2 as well as 0.00437 g of H2O. The molar mass of the compound is 176.1 g. Explain what are the empirical and molecular formulas of..
A meteorological ballon contains 250.0L He at 22 degrees celsius and 740.0mm Hg. If the volume of the ballon can vary according to external conditions
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