Sunday

February 26, 2017
Total # Posts: 7

**chemistry**

calculate the enthalpy change for the following (unbalanced equation) assume all reactants and products are in their standard states Fe2O3(s)+Al(s)---> Fe(s)+Al2O3(s) please answer me as soon as possible.

*March 12, 2010*

**math**

i need help with this question.any help would be appreciated. 1.A company designs jackets that have stripes of equal width but different color.The background color of the jackets is different than the color of any of the stripes. How many different color patterns can the ...

*January 5, 2010*

**chemistry**

i have difficulties in this question.any help would be appreciated. 1) 2No(g)-> N2(g)+O2(g) at 1800K,K is 8.36*10^3.what concentration of NO(g) is in equilibrium with N2(g) at a concentration of 0.0500mol/liter and O2(g) at a concentration of 0.500 mol/liter?

*January 3, 2010*

**chemistry**

i have difficulty in this question. any help would be much appreciated. 1)CO(g)+2H2(g)->CH3OH(g) at 225c, K is 10.2 liter^2/mol^2. what concentration of CH3OH(g)is in equilibrium with CO(g) at a concentration of 0.020 mol/liter and H2(g) at a concentration of 0.020mol/liter?

*December 31, 2009*

**chemistry**

can you explain me how to do this question. any help would be much appreciated. 1) If 0.025 mol of COCl2(g) is placed in a one liter container at 400c, 16.0% of the CoCl2 is dissociated when equilibrium is established. COCl2(g)-> Co(g)+Cl2(g) calculate the value of K for ...

*December 31, 2009*

**chemistry**

hi i have difficulty in this question.any help would be much appreciated. 1) a mixture of 0.0080 mol of So2(g) and 0.0056mol of O2(g) is placed in one liter container at 100K. when equilibrium is established, 0.0040 mol of So3(g)is present 2SO2(g)+O2(g)->2So3(g) <- a) ...

*December 31, 2009*

**chemsitry**

hi I need help with this question please. 1. consider the decomposition of N2O5 in carbon tetrachloride(ccl4) at 45c 2N2O5(soln)-> 4NO2(g)+ O2(g) The reacion is first order in N2O5, with the specific rate constant 6.08*10^-4 per second.calculate the reaction rate under ...

*December 8, 2009*

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