4.18 - 8 O 16 H 32 then the empirical formula is SiO 2 H 4...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Written Key If a substance has an empirical formula of NO 2 and a formula weight of 138 g, what is the molecular formula? (a) N 2 O 4 (b) NO (c) N 3 O 6 (d) NO 8 (e) NO 2 (f) N 3 O 3 (f) NONONONONO The empirical (or simplest) formula is the lowest integral form of the molecular formula. The molecular formula represents the actual quantity of atoms in a molecule. So, since the molecular formula of the made-up, impossible molecule lambonite is Si
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 8 O 16 H 32 then the empirical formula is SiO 2 H 4 . Since the molecular formula is a multiple of the empirical formula, the molecular weight must be a multiple of the empirical weight. The weight of the empirical formula is 46. What multiple is 138 of 46? 138/46 = 3. That means the molecular formula must be three times the empirical formula or N 3 O 6 ....
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online