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Explain the rate of effusion of oxygen gas is twice the rate of effusion of an unknown gas under the same conditions of temperature and pressure. Explain what is the molar mass of the unknown gas?
What volume of 1 M HCl do you have to add to change the pH of the solution to 6? Assume that the change in volume from adding HCl is negligible. Recall that pH = pKa + log([A-]/[HA]. I cannot, for the life of me, figure this out.
What volume of 6.0 M sulfuric acid is required for the preparation of 500.0 ml of 0.30 M solution
A 25.688 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia.
Acetic acid when pure, has a freezing point of 16.0 Celsius; Liquid acetic acid has a heat capacity of 1.96J/g*C. A 25.0 g piece of solid acetic acid at 16.0C is placed into an insulated container containing 50.0g of liquid acetic acid at 50.0C
The combustion reaction of propane, C3H8, in the presence of molecular oxygen, O2, is an equilibrium reaction that produces carbon dioxide and water. Express the equilibrium constant for this reaction.
A gaseous reaction occurs at a constant pressure of 40.0 atm and releases 68.0 kJ of heat. Before the reaction, the volume of the system was 9.00 L. After the reaction, the volume of the system was 2.00 L.
A cup of sugar has a volume of 237 mL. What is the mass of the cup of sugar if the density is 1.59g/mL
Using Wien's law, calculate the temperature a star must have for the peak wavelength of its blackbody curve to equal this value.
A mixture of SO2 and SO2O2 and SO3 at 1000k contains the gases at the following concentrations [SO2]=5.0e-3 mol/L [O2]=1.9e-3 mol/L and [SO3]=6.9e-3 mol/L is the reacton at equilibrium. If not which way will the reaction proceed to reach equilibri..
The work function of copper is 437 kj/mol. Calculate the KE of the ejected electron if the frequency of light is 1.50*10^(15) Hz.
For analysis, a short peptide seven residues long is treated with FDNB, followed by complete acid hydrolysis and amino acid chromatography. What are the products of these steps. What kind of information can be obtained by amino acid chromatography..
The first step in industrial nitric acid production is the catalyzed oxidation of ammonia. Without a catalyst, a different reaction predominates
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