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When 0.525 grams of a protein were dissolved in 78.6 mL of solution at 16.7 degrees C, the osmotic pressure was found to be 0.067 atm. Calculate the molar mass of the protein.
Balance the following half reaction: HS(-) = S2O3(2-) AND calculate what the slope of the boundary between HS- and S2O3^2- is in a pe-pH diagram.
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
What is the energy of a C-C bond in kJ/mole? Explain. How does this amount of energy compare?
Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HClO with 200.0 mL of 0.30 M KClO. The Ka for HClO is 2.9 × 10-8.
Learning Outcomes - Upon completion of this worksheet, students will be able to do the following:calculate concentrations in a serial dilution plot absorbance vs. concentration data in Excel
HEPES are synthetic amine compounds that are often used to make buffers for biochemical studies. What is the pH of a 1.0 L buffer solution that is 0.250M HEPES
a solution of ammonia and water contains 3.30times1025water molecules and 6.90times1024 ammonia molecules.how many
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
For every one of the carbonyl-containing products listed below, pick a appropriate starting material and reagent(s) for oxidative cleavage
a sample of gas is collected over water at a temperature of 35 c when the barometric pressure reading is 742 torr. what
Ethyl acetate liquid (flask with ethyl acetate with the top cover with aluminium paper with small whole in the top and inserted inside hot water container) Was the vapor really "ideal". If not, how were calculations affected
NaNO3(s) + NaNH2(s) yields NaN3(s) + NaOH(s) + NH3(g) What mass of NANO3 and NANH2 must be used to prepare 15.0 g of sodium azide, assuming that the reaction runs with an 82.1% yield
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