base on living enviroment !
30 days x (60 gal / day) x (1 L / 0.264 gal) x (200 mg CaCO3 / L) x (1 g / 1000 mg) x (1 mole CaCO3 / 100.1 g CaCO3) x (1 mole Ca2+ / 1 mole CaCO3) 13.6 mole Ca2+ 13.6 mole Ca2+ x ( 2 equivalents / Ca2+) x (1 ml resin / 0.0017 equivalents resin) x (1 L / 1000 ml) 16.0 L ***** if you don't understand the math, it's called unit factor method or factor label method. the units cancel as you work from left to right. example 30 days x (60 gal / day) ? gal days cancel right? 30 days x (60 gal / day) x (1 L / 0.264 gal) ? L. days and gal cancel etc
5 last night but tonight a 6! it is so cold!
I've been driving rear wheel drive V-8 Fords Mercs for your favorite Uncle Sam since dirt was invented. If you know what you're doing keep your head on straight, they do just fine. Why do you think the Crown Vic is the most popular police car around ?
