Question

HELP MEDAL AND STUFF: Find Empirical Formula From A Combustion Reaction (Combustion Analysis)

Answer 1

8.008 g CO2) / (44.00964 g CO2/mol) x (1 mol C / 1 mol CO2) = 0.18196 mol C

(4.098 g H2O) / (18.01532 g H2O/mol) x (2 mol H / 1 mol H2O) = 0.45495 mol H

Divide by the smaller number of moles:
(0.18196 mol C) / 0.18196 mol = 1.000
(0.45495 mol H) / 0.18196 mol = 2.500
In order to achieve integer coefficients, multiply by 2 then round to the nearest whole numbers to find the empirical formula:
C2H5

Answer 2

oohhhh

Answer 3

Thank you and what about the molecular formula?

Answer 4

How do you find it?