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Sketch the phase diagram of the system NH3/N2H4 given that the two substances do not form a compound with each other, that NH3 freezes at -78°C and N2H4 freezes at +2°C, and that a eutectic is formed when the mole fraction of NH is 0.07 and that the eutectic melts at -80°C.
nitrogen is contained in a 300 ml vessel at 400 mm hg and 10degc. how many grams of nitrogen are in the
Gel filtration of the protein gave an estimated molecular weight of 85000 g/mol. How many His residues are in the protein
A balloon vendor at a street fair is using a tank of helium to fill her balloons. The tank has a volume of 102 L and a pressure of 131 atm at 23 celsius
Which alkyl halide reacted fastest with silver nitrate in ethanol: tert-butyl bromide or tert-butyl chloride. Explain how the nature of the leaving group affects the rate in the SN1 reaction.
cars may be powered by clean H2/O2 fuel cells and electric motors. Under standard conditions, such a fuel cell can develop 1.229 volts. If the oxygen is obtained from air (at P=0.21 bar), what pressure of H2 would be required to develop 1.278 volt..
what compounds would you use and how would testing these two compounds contribute in your knowledge of the above mentioned subjects
What is the density(in gm/ml) of a 3.60 M aqueous sulphuric acid solution that is 29%
Fructose contains only C,H, and O. 17.1g of carbon dioxide gas and 7.26 g of water vapor were produced when 12.1 g of solid fructose were combusted with excess of oxygen gas.
How many milliliters of a 0.210 M NaOH solution are needed to neutralize 25.0 ml of 0.125 M H2SO4(aq)? b) A 15.45 ml volume of 0.1327 M KMnO4(aq) is needed to oxidize 25.00 ml of a FeSO4(aq) in an acidic medium.
calculate the concentration of the hydronium ion in a solution prepared by mixing equal volumes of .050 molar HOCL and .020 molar NaOCl
Description of Intermolecular forces, What parts of the calcium chloride are attracted to what parts of the water molecule when calcium chloride dissolves
You add 1.00 g of a solid weak acid to 100 mL of water, then titrate with 0.100 M NaOH solution. The pH at the half equivalence point is 4.22. Which of the acids in the Weak Acid Equilibrium Constant table most likely matches your unknown?
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