What is the equilibrium constant for the reaction
The standard free energy change for the formation of N2H4(l) from elements is +149 kJ/mol at 25 °C. What is the equilibrium constant for the reaction? (R = 8.314 J/K·mol)
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Calculate the standard cell potential (E^circ) for the reaction rm X {(s)}+ rm Y^{+}{(aq)} rightarrow rm X^{+}{(aq)}+ rm Y {(s)}
A first-stage recovery of magnesium from seawater is precipitation of Mg(OH)2 with CaO: What mass of CaO, in grams, is needed to precipitate 1000lb of Mg(OH)2?
If 43 g of hot water at 85°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity?
What is the standard cell potential of a Cr-Hg cell? (Remember to switch one-half reaction to oxidation and to balance the number of electrons--use paper.)
a solution which is 37.2 mass% hcl has a density of 1.19g/ml.what mass of hcl is contained in 30.0ml of a solution.
Atmospheric pressure is 29.86Hg. What is the absolute pressure in psia being measured? The density of mercury at 70F is 13.543g cm^-3.
when 50.0 grams of acetylene is allowed to react with excess oxygen, 75.0 grams of CO2 are formed. What is the percent yield of carbon dioxide?
Determine the entropy change of the system when 0.750 g of ethanol (C2H5OH) evaporates, given ΔH vaporization is 40.5 kJ/mol and the normal boiling point of ethanol is 78.5 °C.
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