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A misture of .25 mol N2 an d .60 mol H2 are placed in a 1.0 L evacuated flask at 300 degrees Celcius and it is then allowed to reach equilibrium. If the equilibrium misture contains .45 mol H2, what is the equilibrium constant for reactionN2(g) + 3H2(g) = 2NH3(g)
How many grams of sucrose must be added to 552 g of wwater to give a soution with a vapor pressure 2.0 mm Hg less than that of pure water at 200C ?( the vapor pressure of water at 200C is 17.5 mm Hg)
for the isoelectronic series vco6- crco6 and mnco6 would you expect the energy of metal to ligand charge-transfer bands
Which stage of ionization usually produces more ions and why?
What is the [H3O+] in a buffer that consists of 0.30 M HCOOH and 0.20 M HCOONa? Ka=1.7x10^-4
Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 1.805 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment.
PCl5(g) PCl3(g) + Cl2(g) Kc=0.042 The consentrations of the products at equilibrium are (PCl3)= 0.150M and (Cl2)=0.200 M. What is the consentration of the reactant, PCl5 at equilibrium
The half-lives of different radioisotopes are given in the table below. If the initial amount of indium-117 is 8.4 g, how much indium-117 is left in the body after 86 minutes?
a flask contains 0.180 mol of liquid bromine br2. determine the number of bromine molecules present in the
What is the pH of 0.185M sodium phenolate (C6H5ONa), the sodium salt of phenol (Ka= 1.0 X 10-10)
Determine which of the following pairs of reactants will result in a spontaneous reaction at 25 degrees C.
a gas is compressed in a cylinder from a volume of 20 l to 2.0 l by a constant pressure of 10 atm. calculate the amount
A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9 C and 0.930 atm, was dissolved in sufficient pure water to form 250.0 ml of solution. What was the pH of that solution.
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