How to find empirical formulas?

Question

hba · Answer

Is this a general question or do you have a question that you want to solve ? @lizki

hba · Answer

An Empirical Formula Is The Simplest Formula Of A Compound :)

hba · Answer

Its better you provide me with a question so i can help you :) @lizki

anonymous · Answer

yes,wait

anonymous · Answer

a)   12,6% Li  ;29.2%S  ;58,2%O by mass

anonymous · Answer

b) 27.4%Na,1.2%H,14.3%C,57.1%O by mass

anonymous · Answer

@hba

hba · Answer

OK, Don't panic!

To do these, remember you need to know composition by numbers of atoms, but they are giving % by weight. If you divide all the percents by the atomic weight of the respective element, you will get a series of numbers that are proportional to numbers of atoms. Then, all you have to do is get them into lowest whole numbers to get the empirical formula.

-Hba

anonymous · Answer

Thank you alot :)))))

hba · Answer

Now try solving it and do tell me what answers you get,its very easy :)

anonymous · Answer

Okay,but i cant do them fast,because i'm not very good at chemistry :/

hba · Answer

Do not worry i am here to help :)

hba · Answer

@lizki Done ?