Can anyone help with A=2-log %T ??

11/13/2010 | Me

[paul544]

Thanks for any help.

[freedumb2003]

You signed up in 2000 just to get help with chemistry???

(Other than mixology, I haven’t done chemistry in over 30 years...)

[rdl6989]

Lol, I’m not even smart enough to understand the question.

[cripplecreek]

[edcoil]

why don’t you answer his question and not be a smart ass?

The maximum number in % is 100%. This is the big clue.

Then split -log (%T) in -Log % and -Log T. Replace % with 100.

Log (100) = 2. After that you have A = 2-2-log T. And this becomes A=- log T. Therefore A = -log T.

Do an example by filling T=5.

Then you have 2- log (100*5) = -0.69897 or log (5) is also -0.69897.

Hope this helps.

* 3 years ago

[Tolerance Sucks Rocks]

Which part of the equation is the problem for you?

[JRandomFreeper]

I can do homework professionally (gack, I'm back to this? The economy really, reaaly needs to improve), but I charge steeply, depending on the degree you are seeking. Specials on term papers.

Work it dude. You can do it.

Asking for help for homework in class is ok. Maybe not so much on a public forum.

/johnny

[Hot Tabasco]

If I'm not mistaken, that formula is used to determine the best brewing temperature of beer.........

I might be wrong tho so here's a pingster for someone who might be more knowledgable in these things.........

[freedumb2003]

Someone got up on the wrong side of the bed today...

[paul544]

I’m assuming you don’t leave the % as a whole number... So, up to this point I’ve been converting it to, say .25. If that is right, then I’m going with the log of .25 but that doesn’t seem right. I’ve seen where it might be 1/.25 then log...

[Drango]

42

[JRandomFreeper]

I'll bet you didn't use (human readable) log tables or a slipstick. Not with that many decimal points.

/johnny

[Vendome]

 

[paul544]

Thanks. I saw that out there as well. I’ve been trying to use it and think it helps. Appreciate it.

[devere]

Are you having trouble with the math or the chemistry?

For the math you just need to clarify if %T should be 25 or .25, and then compute the answer.

[Vendome]

Geeze edcoil:
It’s Saturday Night and paul544 has been on here long enough to take a razzing.

Probably knew he was going to get a few anyway.

BTW paul544 the answer is log - 42 = %. /s

[Vendome]

Now that’s funny.

getting some popcorn...

[paul544]

I get the chemistry for the most part.

The issue is when I see 2-log, I’m not sure of the math to apply to the %. If I make the 25%, .25, is the next step just applying the log function or is there another step?

[JPG]

Chem tip of the day: Never mix ammonia with bleach...produces lung searing gasses that can off you.

[FrankR]

Dang...you beat me to it...The quicker, picker-upper" LOL