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For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reactionN2(g)+3H2(g)=2NH3
the standard change in Gibbs free energy is ?G° = -32.8 kJ/mol. What is ?G for this reaction at 298 K when the partial pressures areP C2H6=0.100atm, P H2=0.100atm and P CH4=.750atm
Calculate the intermolecular collision frequency and the mean free path in a sample of helium gas with a volume of 5.0 L at 27 degrees Celsius and 3.0 atm.
How many ppm of Pb2 ion are contained in this solution? How many ppm of nitrate ion are contained in the same solution?
What is the freezing point of water under a pressure of MPa? Assume that the density of ice is 0.915 g.cm^-3 and that of liquid water is 0.998 g cm^-3 at this pressure
What type of mineral source (sulfide, oxide, halide, phosphate, silicate, carbonate, etc) are the following elements typically isolated from? Write the chemical formula for the source mineral (for example: silver, typical mineral source = silver s..
the mass spectrum determined the molecular weight of mehtyl salicylate to be 125.15 g/mol. What is the molecular formula of methyl salicylate?
a 1.000 g sample of a certain mixture is 75% (by mass) potassium sulfate and 25% of an unknown sulfate with formula MSO4. the unknown is dissolved and precipitated with barium ions. If 1.489g of precipitate is collected, what is the identity of M
What proportions of benzene and ethylbenzene should be mixed (a) by mole fraction (b) by mass in order to achieve the greatest entropy of mixing
A 352-mL container of nitrogen is held at a pressure of 791 mm Hg. What volume container would be lowered to 649 mm Hg?
Write a Lewis structure for each of the following molecules.
When polymerization of a protein is complete but the protein is still completely linear, what is the highest level of structure that has been completed?
You dissolve 1.00 gram of an unknown diprotic (two titratable protons) acid in 200.0 mL of H2O. This solution is just neutralized by 5.00 mL of a 1.00 M NaOH solution. What is the molar mass of the unknown acid?
What is the pH of a 0.15M solution of HCOOH formic acid if the Ka of formic acid HCOOH is 1.8x10^-4 at 25 degrees Celsius.?
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