Graham's Law of Effusion

[Pinklipz84]

Dude, "DONT SCREW UP UR MATHS AT THIS POINT"...I kept remembering that in my exams...

[hundreddollarcoin]

I get 21.1 g/mol.

[addisballer]

2) In a shell and tube heat exchanger steam at 5000 kpa which is 64% dry is condensed and cooled to 80 degree celusis . cooling water is used from a local lake with an average temperature of 19 degress celcisus . can be provided at a rate of 30000kg/h.if the maximum allowable temperature of the warmd coooling water is 40 degree celcuis .what is the maximum flow rate for the steam?

Thanks!

[chemistryprofessorpc]

@addisballer ////////This is not a Graham's Law problem.

[coasterfreak666]

thank you this was helpful im subscribing

[XOXLIVETOLOVE]

I thought that was great but I don't understand which units rate must be in. When the time was mL/sec, you didn't put the time in the denominator but when it was in minutes you did?

[chemistryprofessorpc]

Oops, my bad. Thanks for bringing it to my attention. Rates should always be in something per unit time. It can be in reciprocal time, 1/sec, for example. The only time it is acceptable to leave out time would occur when the time unit is obvious and understood. Even then, it is better to include time than to ignore it.

Thank you for your comment and observation.

[ballsoffury4]

This is absolutely sexy

[98youteks]

This lecture helped me alot!

thank you professor..!

You're such a nice educator,

In what school have you graduated?

[chemistryprofessorpc]

You're welcome! I have degrees from three schools: Limestone College, Duke University, and Florida State University.

[deanthedream17]

this is very helpful and showed me an alternate way of graham's equation that is easier than the one I am doing in AP chemistry. P.S. I am a high school senior who wants to go to Duke so this awesome.

[airfreak789854521]

thanks for the vid! Excellent teacher