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KilaTsunami
October, 2024

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AP biology help! please, +karma, test tommorrow

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charmander
Posts: 10636 - Karma: 370
so i need to be able to get a ph out of a molarity using a calculator. i know i need to use the log function but i cant remember what i need to do exactty.

+mad karma

im already failing this class, so if you could help its be super rad.

gracias
Dec 10 2008 8:11PM
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spruitm
Posts: 2221 - Karma: 1,069
what is this world coming to when you need a calculator for biology.

i was hoping the answer would be salamanders
Dec 10 2008 8:12PM
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charmander
Posts: 10636 - Karma: 370
well, its ap so its hard as fuck!

i wish i was in regular bio.

i gave you karma though, just to show how cool i am and to excuse sleeping in this class.
Dec 10 2008 8:15PM
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wisconsinsteeze
Posts: 1170 - Karma: 749
http://74.125.95.132/search?q=cache:T4-_loloeb8J:www.embracechallenge.net/chemistry/Calculating_pH.doc+ph+out+of+a+molarity+using+a+calculator&hl=en&ct=clnk&cd=3&gl=us

go there and scroll down, it says how to do it.
Dec 10 2008 8:16PM
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Billek
Posts: 5665 - Karma: 98
I don't like how there are no reference tables for AP Bio. They were so great in Earth Science, Bio, and Chem.
Dec 10 2008 8:16PM
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aurora.
Posts: 1169 - Karma: 104
pH= - log [M]

as long as the molarity (M) is the molarity of the H+ ions...so it has to be an acid....then you just plug it in...
if its a base i think you just plug the molarity of the OH- ions....

i think this is right...but its probably in your book
Dec 10 2008 8:16PM
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charmander
Posts: 10636 - Karma: 370
thanks a bunch man.

10/10 k
Dec 10 2008 8:17PM
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MCIRONCOCK
Posts: 3094 - Karma: 30
Biology is my favorite subject :D
Not that that relates to your thread in any way, sorry i couldn't help.
Dec 10 2008 8:20PM
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Fish_Sandwich.
Posts: 9108 - Karma: 16
Damn, when I took AP bio as a sophmore like 3 years ago we never had to do any of that shit, we barely had to do any math at all and I got a 4.  You must have a weird curriculum, sorry for not being able to help you, I thought it would be not chem related haha.  Good luck though, if you study hard the test will be a breeze.
Dec 10 2008 8:22PM
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charmander
Posts: 10636 - Karma: 370
its the chem shit thats fucking me up, last year in physical science i got a 96%, and i was kickin ass at biology, but my mom decided i should do ap, even though im not going to college. oh well haha
Dec 10 2008 8:29PM
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Fish_Sandwich.
Posts: 9108 - Karma: 16
Why are you not going to college?
Dec 10 2008 8:31PM
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charmander
Posts: 10636 - Karma: 370
it costs money. and i fuckin hate school.
Dec 10 2008 8:33PM
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Fish_Sandwich.
Posts: 9108 - Karma: 16
I guess it's safe to assume you are going then
Dec 10 2008 8:36PM
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charmander
Posts: 10636 - Karma: 370
huh?
and i would have to pay for it all too. my parents wont pay for me to go.
Dec 10 2008 8:54PM
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natedogg789435
Posts: 1177 - Karma: 9
im in ap bio and havent had to use a calculator all year. physics on the other hand.....
Dec 10 2008 9:05PM
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Fish_Sandwich.
Posts: 9108 - Karma: 16
I made the assumption that you are still young and don't realize how much college will benefit you.
That's sucks that your parents don't understand the value of education.
I'd recommend that you go to college but that's just me.
It seems weird that your parents want you to take hard classes but they don't care/won't pay for you to go to college.  Seems weird to me.
Maybe you'll be on of the kids who is still successful without college, but the odds are certainly against you.
Dec 10 2008 9:07PM
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