I only have two questions left and I can't get them....will someone please help?
1. If 4.04g of Na combine with 11.46g of O to produce a compound with a formula mass of 108.0 amu, what is the molecular formula of this compound?
2. A compound containing sodium, chlorine, and oxygen is 25.42% sodium by mass. A 3.25g sample gives 4.33*10^22 atoms of oxygen. What is the empirical formula?
** If you need the atomic masses for these problems, they are :
Na-23 ; O-16 ; Cl-35.45
Thank you for any help.
2006-11-28 13:55:45 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help
try using www.chemtutor.com, it helps you understand those kind of problems
2006-11-28 14:03:00 · answer #1 · answered by bubble345221 2 · 0⤊ 0⤋
Google this... I just had a test over this stuff but forgot it a day later. :/ Moles are horrible.
2006-11-28 22:03:55 · answer #2 · answered by Almana 3 · 0⤊ 0⤋