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To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 3.20mol of gas measured at 251 degrees Celcius in a 1.75-L container assuming real behavior?
Construct a delta H and delta S table, including the four possibilities associated with the two possible signs for each of delta H and delta S. Discuss the resulting sign of delta G and the spontaneity of the process.
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5
The Bracket series of emission lines falls in the infrared region of the em spectrum, and each line is a result of an electron falling from a higher Bohr orbit to the n=4 level.
filtrate be used to transfer the residue when the desired product is solid
What is the total mass of AlCl3 in this sample? b. How many moles of AlCl3 are in this sample?
Describe how you would make 500 mL of 0.150 M Na2SO4 given 1 kg of Na2SO4, a distilled water supply, a balance, anf a 500-mL volumetric flask.
Given 174 mL of a buffer solution that is 0.23 M formic acid and 0.28 M sodium formate, calculate the pH of this solution after the addition of 1.93 mL of 5.2 M sodium hydroxide. The Ka of formic acid is 1.8x10-4
How many moles of KHP were weighed out? How many moles of NaOH were required to neutralize the KHP that was weighed out?
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
hydrocarbon produced 24.8 g of CO2 and 8.44 g of H2O. What is the empirical formula for the hydrocarbon?
Calculate the pH of a buffer solution prepared by dissolving 4.3 g of NaHCO3 and 5.5 g of Na2CO3 in 0.20 L of water.
100 mL of 0.06 M TRIS hydrochloride (C4H12ClNO3) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown. What is the approximate pKa
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