Total # Posts: 5
a wheel of radius 50 centimeters accelerates uniformly from a frequency of 4 hertz to 6 hertz during 50 revolutions. what are its angular acceleration and a period of time for this frequency change? find the tangential and normal accelerations at the beginning and the end this...
December 11, 2011
Calculate the delta H for the reaction N2H4(l)+ O2(g) --> N2(g) + 2H20(l) Given the following data: 2NH3(g) + 3N20(g) --> 4N2(g) + 3H20(l) N20(g) + 3H2(g) --> N2H4(l) + H20(l) 2NH3(g) + 1/2O2(g) --> N2H4(l) + H20(l) H2(g) + 1/2O2(g) --> H20(l)
October 28, 2009