Can someone give me a step by step explanation with getting an empirical formula from percent composition
Favorites|Homepage
Subscriptions | sitemap
HOME > > Can someone give me a step by step explanation with getting an empirical formula from percent composition

Can someone give me a step by step explanation with getting an empirical formula from percent composition

[From: ] [author: ] [Date: 12-06-01] [Hit: ]
and multiply the mass percent by 100 (so its not a percent anymore). Now you have 25.9 g N, 74.2. Find the moles of each element.......
Finals are coming up and I'm half asleep, which is probably why I'm not understanding this at the moment.

Can someone give me a step by step explanation as to how to get an empirical formula of a compound that's 25.9% nitrogen and 74.1% oxygen?

-
I know your feelings, my finals are coming up too. :c

1. Assume that you have a 100 g sample, and multiply the mass percent by 100 (so it's not a percent anymore). Now you have 25.9 g N, 74.1 g O
2. Find the moles of each element. 1.85 mol N, 4.63 mol O
3. Divide the larger mole amount by the smallest. If you don't get close to a whole number, multiply by two. Usually that fixes the problem.
This problem ends up with 1 N/ 2.5 O. Multiply by two so it's 2 N/ 5 O
Therefore, the compound's empirical formula is N2O5 (can't do subscript, but yeah)
1
keywords: Can,with,percent,give,someone,getting,from,empirical,composition,me,formula,an,step,explanation,by,Can someone give me a step by step explanation with getting an empirical formula from percent composition
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .