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@Eric - This looks like a useful way to figure out the weight of materials so I'd like to understand the math. But you lost me when you crossed out the numerator and denominators. I see the match for 1mol of Cl- but the rest does not make sense to me.
I tried to substitute KCL since you provided an answer and got a MM of 22.99 + 39.098 = 62.1 but that's as far as I get.
It's called dimensional analysis. Basically, write down your units by putting one on the numerator and one on the denominator. So, 2 divided by 2 is one, correct? So, x divided by x is 1. Remember a fraction is just a number or variable (this may make some peoples eyes glaze over, but I hope you're still with me) divided by another number or variable. So, a mole (mol) is a unit. A mole is also a variable. So, a mole divided by a mole is 1, and since everything times 1=itself your units "cross out". This is so you can check your work. If you have two units that didn't divide by itself then your work is wrong. But if it's one unit, then in the language of chemistry, you've figured out what happens when you react what with what. This is how scientists can see what the mass of Carbon Dioxide is emitted from a smokestack. If you have anymore questions I'll make a special thread for this.
Bob Campbell said:
@Eric - This looks like a useful way to figure out the weight of materials so I'd like to understand the math. But you lost me when you crossed out the numerator and denominators. I see the match for 1mol of Cl- but the rest does not make sense to me.
I tried to substitute KCL since you provided an answer and got a MM of 22.99 + 39.098 = 62.1 but that's as far as I get.
Actually Eric, a thread or perhaps even a whole Group for Chemistry (and the math that goes with it) is probably a really really good idea!
Making it right now!
TCLynx said:
Actually Eric, a thread or perhaps even a whole Group for Chemistry (and the math that goes with it) is probably a really really good idea!
For the thread I hijacked--here's the new group: http://aquaponicscommunity.com/group/chemistry-math-and-aquaponics Ask as many questions as possible! Hope you like it!
@Eric - I see... It's just the units that cancel. The quantity remains as part if the equation. Got it
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