Recent content by Jennifer_88

sorry every one it's d^2y/dx^2=62y-.2

Hi can someone help with the DE dy^2/dx=62y-.2 thanks in advance

thank you guys.

Hi, I am working out a heat transfer problem but I've to solve the Differential equation in order to keep going on but it's been a long time since i did any Differential. your help will be appreciated. d/dx[(k+aT)dT/dx]=0 i need thins in terms of T(x) my boundary conditions...

where did C3 come from ?? thanks for the help

Hi, I am working out a heat transfer problem but I've to solve the Differential equation in order to keep going on but it's been a long time since i did any Differential. your help will be appreciated. the equation in heat transfer form is T^2+z*k*T=z(C1*x+C2) or...

any good HEAT TRANSFER books out there?? Hi, I am looking for a heat transfer book for Graduate level. i am actually familiar with good undergraduate books like fundamental of heat transfer. please tell me a little bit about whatever book you are recommending thanks in advance

Hi, I am trying to work this problem out but I don't know how to solve the boundary value. here is the problem statement thanks in advance

well i am going to work on it again right now and hopefully get .84 as an answer. wish me luck thanks guys you've been so helpful

well thank you for the help, but it just not working the final answer of molar fraction of H2o is .84 but I'm not getting that answer.

i just found that it is actually not working. i tried really different things to make it work but it has not so what i did is i did a ratio between the relationship you gave me 1 mole of hcl/ 9 mole of h2o = [(the mass of hcl (100 g?)/ (atomic mass36.46)]/[(mass of H2O/(atomic mass of h2o...

ok here is the problem description one tenth of a kg of an aqueous solution of HCL is poured into .2 kg of an aqueous solution of NaOH solution. the mole fraction of the HCL solution was .1, whereas that of the NaOH solution was .25. what are the mole fractions of each of the components in the...

it's been along time since i did any chemistry and I'm facing this now. i think i need to find a relation between the molar fraction before the reaction and the mass of Nacl and h2o. maybe there is a ratio or something

ok thanks for the replay i've .1 kg hcl .2 kg Naoh molar fraction of hcl is .1 molar fraction of naoh is .25 and i want to find the molar number for the reaction which should be h2o and Nacl please let me know if I'm clear enough thanks :)

molar fraction problem?? (Help) hi, I need help with this problem, ( I've spent fairly enough time trying to figure it out but :( anyways, I'm given) the mass of Naoh and hcl the fraction number of the two before reaction find) the fraction number after reaction is...