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Chemical Engineering - Reactor Engineering

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2qvw50g.jpgSo i'm stuck on a tutorial I've been sent to do, could anyone help me out please?

 

i have no idea where to start, I've looked through all my previous lecture notes but i can't find a logical way to solve the problems.

 

i've attached the tutorial.

 

Thanks.23j1ic6.jpg

After breaking my neck reading the scrolls you posted i thought that they first one gave you the equation and the second one gave you some figures to plug in.

 

So what have you done so far and what do you not understand?

 

post-74263-0-16212900-1413413659_thumb.jpgpost-74263-0-07760700-1413413665_thumb.jpg

Edited by studiot

  • Author

After breaking my neck reading the scrolls you posted i thought that they first one gave you the equation and the second one gave you some figures to plug in.

 

So what have you done so far and what do you not understand?

 

attachicon.gif11.jpgattachicon.gif22.jpg

 

The thing is i need find the time and in order to get that i need to integrate which I'm unable to do with that equation

Show us what you get directly after separation of variables.

  • Author

this is hat i get... i've made many attempts on it smh

 

2hhm82p.jpg

Looking at the end of your working surely

 

 

[math]\int {\frac{{a + bx}}{{cx}}} dx[/math] = [math]\int {\frac{a}{{cx}}dx} [/math] + [math]\int {\frac{{bx}}{{cx}}} dx[/math]

 

Where a, b and c are constants.

 

is a very basic integral

Edited by studiot

  • Author

Looking at the end of your working surely

 

 

[math]\int {\frac{{a + bx}}{{cx}}} dx[/math] = [math]\int {\frac{a}{{cx}}dx} [/math] + [math]\int {\frac{{bx}}{{cx}}} dx[/math]

 

 

 

Where a, b and c are constants.

 

is a very basic integral

thanks for the help, i tried solving it in that way and i'm still getting the wrong answer.

 

Heres what I've done/:

2j1q7o8.jpg

My post#6 was meant to stimulate questions about your integration.

 

I don't see a logarithm creeping into your working and there should be.

 

What is the integral of a constant times dx and what is the integral of dx/x ?

 

Note I haven't cheched you separation of variables to see if you got the original fraction correct, fuzzwood already asked you for that and I don't see that either.

Edited by studiot

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