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A 2.45 g sample of a gaseous oxide of nitrogen occupies a volume of 1.34 L at 28°C and 745 mmHg. What is the most likely formula for the gas? A. NO B. N2O4 C. N2O D. NO2
A mixture consisting of 50 grams ethanol and 50 grams water is distilled using an efficient column. How much water will remain in the distillation flask the instant all of the azeotrope has distilled?
The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25°C. Find Kp for the reaction 2HI(g) -> H2(g) + I2(s) at this temperature.
Explain 3-A 0.421 g sample of aspirin prepared in the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
An investment company whose stock trades based on supply and demand in the market rather than at net assets value
If you mix 200. mL of 1.0 M KCl with 300. mL of 2.0 M KCl, what is the molarity of KCl in the final solution?
How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.
In the titration of 50.0 mL of 0.0200 M C6H5COOH(aq) with 0.100 M KOH(aq), what is/are the major species in the solution after the additon of 5.0 mL of NaOH(aq)
calculate delta U and delta H for the process on the basis of 1 mol of gas. Assume for the gas that PV/T is constant, Cv= (5/2)R, and Cp=(7/2)R.
Ammonia is among the top ten synthesized compounds. Its many uses include the manufacture of ammonium nitrate and other fertilizers.
Describe how a cation exchange resin and a solution of NaOH with a known concentration could be used to determine the amount of NaCl in an aqueous solution
Calculate the number of moles of quicklime, CaO, that would be produced by the decomposition of 30.0 moles of limestone, CaCO3, in the following reaction.
If the Ksp of Fe(OH)2 is 7.9 × 10-16, what is the maximum [Fe2+] that can coexist with these solutes in the solution?
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