hayz

hey guys i have a question that i cant work out how to calculate be great if you can help. Question: A mixture of 5.00E-3 mol of H2 and 1.00E-2 mol of I2 is placed in a 5 L container at 448 degrees C and allowed to come to equilibrium. Analysis of the equilibrium mixture shows that the concentration of HI is 1.87E-3 M. Calculate Kc at 448 degrees C for reaction H2(g) + I2(g) <-> 2 HI Cheers Hayz

hey guys im having trouble working out this question. be great if ya can help. The position of a golfball is given by r = ((3t^2)i^ + (2t^2-1/6gt^3)J^)m. Calculate its velocity and its acceleration at time t = 1s (assume that g = 10ms^-2 i^ = i hat J^ = j hat

thanx so much guys, you have been a great help. i understand it now.

cheers Ryan your example helped but wasnt quite the same so i am still stuck with it but il keep trying to see wot i get

hey guys and guls, i was just wondering if you can show me how to work this question out? consider the following reaction: H2S(g) + 2 NaOH(aq) -> Na2S(aq) + 2 H2O(l) How many grams of Na2S are formed if 2.05 g of H2s is bubbled into a solution containing 1.84 g of NaOH, assuming the limiting reagent is completely consumed? Be great if you can help, im having problems working out these questions. Hayz