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The enthalpy for the formation of 1 mole of N(aq) is -80.29 kJ/mo. What is the Δ for the formation of 3 moles of NH3(aq?
The frequency of strong yellow light in the spectrum of sodium is 5.09.10*14s calculated the wavelength of light
A mixture of two miscible solvents that may be used as the solvent for a recrystallization experiment would be which of the following
The standard free energy of activation of one reaction A is 95.00 kj mol-1 (22.71 kcal mol-1). The standard free energy of activation of another reaction B is 77.40 kj mol-1 (18.50 kcal mol-1). Assume a temperature of 298K and 1M concentration.
for each of the following slightly soluble salts write the equilibrium equation dor dissociation and the solubility product expression: a)Ag2S. b)Al(OH)3. c)BaF2.
The mixture was stirred, causing all of the sample to dissolve. The excess HCl in the solution required 38.4 mL of 0.164 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
In the reaction: 2 Na + Cl2 = 2 NaCl, if 46.0 g of sodium react, what is the first step necessary in determining how much sodium chloride can form
If a 2.5 L reaction vessel initially contains 725 torr of cyclopropane at 485C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr?
Plot pH values as a function of volumes of added KOH and suggest appropriate indicators for the titration.
calculate how many atoms of potassium a three 3.00 mole sample of k2s would have ?calculate the current for
A 0.250 mol sample of argon gas has a volume of 9.00 L at a pressure of 875 mm Hg. What is the temperature (in celsius) of the gas?
Calculate the density of hydrogen sulfide gas, H2S, at 58°C and 896 mm Hg. Obtain the density in grams per liter.
Explain what is the most common/easiest method to remove benzoic acid from benzaldehyde. Incorporate some steps and what solvent would be used.
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