Chemistry manipulating formulas
Hi, I've always had troubles manipulating formula's, because I've never really been truly taught (stupid teachers focus on material but not the basic stuff like this.. which I have troubles with), I kind of just have to learn it myself. But lately I've been getting a bunch of formulas that I have to manipulate in Chemistry. For example Pv= nRt How do you manipulate it? o_o. I believe uhh for example I'll try to find n (mol) I divide RT on both sides and the formula will be Pv/Rt = n.
Here's where i get confused, why can't I multiply n (formula so far pv x n = Rt) over to the other side and then divide pv (because they are being multiplied by each other?- this where I'm wrong, it's also an extra step for me do that) - so the formula is n= Rt/ pv... so that's wrong. Please help D; ... thanks in advance.
Here's another easy formula that I don't know how to do... n=m/M.. I have to use the triangle thing, if you know what I'm talking about.
2 Comments • Newest first
[quote=dadenong]multiply n to the other side? so nxPv = n X Rt X n? you need to do what you do to 1 side to both sides
then divide pv? n x Pv/Pv = n X Rt X n/Pv
n= n^2 x Rt/pv
see how it doesn't make sense?[/quote]
ohhhhhhhh. Thanks. And thanks to everyone else who tried to help .
pv=nrt
wow, i haven't used this formula in a long time. you don't really have to know how to use it, since manipulating the formula is just basic algebra.
pv=nrt
i don't really know what you were saying in your post, but it's basic algebra.
if you want n, you divide rt on both sides, so you get pv/rt=n
you can't multiply n because n is already alone on the right side. otherwise, you'll get PV/RT n = n^2 o.o
whatever, all you gotta know is BASIC ALGEBRA.