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Explain ammonium hydroxide contains 16.1 mol/kg of ammonia. Compute the vapor pressure of ammonia over this solution at 298K.
To identify a diatomic gas x2 a research carried out the following experiment: She weighed an empty 1 L bulb, then filled it with the gas at 1.10 atm and 23.0 C and weighed it again. The difference in mass was 1.27 g. Identify the gas.
Ammonium hydrogen sulfide decomposes according to the following reaction, for which Kp = 0.451 at a given temperature. If 55.0 g of NH4HS is sealed inside a 5.00 L container at this temperature, calculate the partial pressure of NH3(g) at equilibr..
Two organic species are produced when 1,1-dimethylethylmagnesium bromide reacts with 1-pentyne (a) Draw the skeletal structure of the new Grignard produced
given closed system air filled piston-cylinder devicep1 100 bar t1 400deg c p2 10 bar t2 100deg ccase 1 air first
An aqueous solution containing 34.9g of an unknown molecular (nonelectrolyte) compound in 144.7g of water was found to have a freezing point of -1.4 degree celsius
The solution diluted in half by water (1 mL of X and 1 mL of H2O) has an absorbance at 425 nm of 0.8 and a molar extinction coefficient of 1.5 ? 103 M-1 cm-1. What is the molar concentration of the original solution of X? (1 cm cuvette)
Three colorless solutions in test tubes, with no labels, are in a test tube rack on the laboratory bench. Lying beside the tests tubes are three labels : 0.10 M Na2CO3, 0.10 M HCL, and 0.10 M KOH.
Why does BrO2 have a free radical? explain the bonding that happen, and why it happens. Why does NO have a free radical? I know it's because there in one unpaired electron
15 g of steam at 373 K is added to 250g of H2O (l) at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate ?S for the process.
Solutions of sulfuric acid and lead acetate react to form solid lead sulfate and a solution of acetic acid.5.70 of sulfuric acid and 5.70 of leadacetate are mixed.
In the spinach extraction, indicate which of the following solvents may or may not be suitable as a replacement for the hexane used in the experiment: acetone, diethyl ether, ethanol. Briefly explain your choices.
What should be the concentration of the NaCl solution (in g/L) so that it will have the same osmotic pressure as the blood at 37 deg C
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