speed of diffusion

Debate and discussion of any biological questions not pertaining to a particular topic.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
mustangsally
Garter
Garter
Posts: 12
Joined: Fri Jun 10, 2005 1:21 pm

speed of diffusion

Post by mustangsally » Fri Jun 10, 2005 1:34 pm

I am having trouble understanding how to calculate speed of diffusion. The lab book states "multiply the length of time and the distance moved by 6 in order to calculate the speed of diffusion:______mm/hr." I do not understand how to do this calculation. The length of time I have is 10 mins and the distance moved is 9.2 m.

This may be a simple mathematical equation, but I have not been in school in _at_ 25 yrs, and it is boggling my old brain. Any help is appreciated

User avatar
Chris4
Coral
Coral
Posts: 286
Joined: Mon Mar 07, 2005 4:56 pm
Location: UK

Post by Chris4 » Fri Jun 10, 2005 2:50 pm

What is this multiply by 6? I maybe could understand 60 as that would change hours into minutes or whatever.

I don't if there is a special calculation for diffusion but I would just do this:

10 mins = 0.166 hr (10/60)

9.2m = 9200mm.

so 9200/0.166 = 55,200 mm/hr.

Anyone want to tell me im wrong. :arrow: or right? :lol:

mustangsally
Garter
Garter
Posts: 12
Joined: Fri Jun 10, 2005 1:21 pm

Post by mustangsally » Fri Jun 10, 2005 3:14 pm

thanks. i didn't understand about the multiply by 6. the other execises used the same equation as you. :? i have a very inquisitvie mind and can't stand not knowing about something like this.

User avatar
canalon
Inland Taipan
Inland Taipan
Posts: 3909
Joined: Thu Feb 03, 2005 2:46 pm
Location: Canada

Post by canalon » Fri Jun 10, 2005 3:28 pm

Easy but the explanation is bad. In fact what you are supposed to do is
1/(9200*6) and you get the good result. Why simply because you are in fact calculating:
(1/6)*(1/9200)
The first part of the equation is the conversion of time into hours 10 minutes= 1/6 of an hour

Or multiply the time by 6, convert minutes in hour (yeah I know: 1 hour) and divide this by the distance multiplied by 6.

Chris4 Explanation is probably better, but those completely stupid explanations fits with your text...

HTH

Patrick

User avatar
Chris4
Coral
Coral
Posts: 286
Joined: Mon Mar 07, 2005 4:56 pm
Location: UK

Post by Chris4 » Fri Jun 10, 2005 3:57 pm

Glad i was pretty much on the right track. Soz about my rubbish explanations and text, i did rush through that.

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 11 guests