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chloroform, CHCl3 has a ΔHvap = 29.4 kL/mol. what is it's vapor pressure at 25 degrees celsius?
Suppose that O1 and O2 are eigenfunctions of a linear operator A with eigenvalues a1 and a2, respectively, and that we construct a linear combination Y=C1O1 + C2O2
When atomic absorption spectrophotometer had been allowed to adequately equilibrate, a blank determination of absorbance gave the following results.
If strong oxidizer spill occurs in the vicinity of barrels of flammable chemicals, with one of the barrels of flammable chemicals possible leaking as well, should water be used on the incident or how should mitigation proceed?
How much energy is released during the complete combustion of 433 grams of cyclopropane
The Balmer series of transitions for the hydrogen atom result in absorption of photons that all originate from the n = 2 level. What are the longest and shortest wavelength photons in the Balmer sequence?
The vapor pressure of water at 26 degrees C is 25.209 mmHg. How many moles of gas were collected?
The student rinses the sample into a small beaker using distilled water, and then titrates the solution with a 0.500 M HCl solution. 12.00 mL of the HCl solution is needed to reach the endpoint of the titration. Calculate the value of Ksp for borax..
What is the mass percent of sucrose (C12H22O11, Mm=342 g/mol) in a 0.350-m sucrose solution?
Express the molar concentration numerically using two significant figures. What is the final concentration of D at equilibrium if the initial concentrations of A = 1.00M and B= 2.00M
A current is drawn from the cell until 2.20 g of silver have been deposited at the silver electrode. Calculate E for the cell at this stage of operation in volts.
Calculate the concentration of magnesium and calcium in ppm. Record your answers as ppm Mg2+, and Ca2+ espectively. For each answer indicate the ppm as CaCO3 also.
the concentration of copper(II) sulfate in a brand of fertilizer is 0.07% by weight. If a 21.5 g sample of this fertilizer is dissolved in 2.0L solution, what is the molar concentration of Cu2+.
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