Complete combustion of 3.90 g of a hydrocarbon produced 12.5 g of co2 and 4.28 g of h2o. what is the empirical formula for the hydrocarbon?

Empirical formula of the hydrocarbon is .

Explanation:

Mass of carbon dioxide produced = 12.5 g

Moles of carbon dioxide =

Moles of carbon atom in 0.2841 moles of carbon dioxide:

1 × 0.2841 mol = 0.2841 mol

Mass of water produced = 4.28 g

Moles of water =

Moles of hydrogen in water = 2 × 0.2378 mol = 0.4756 mol

For empirical formula divide the moles of element which are is less amount with all the moles of every element.

Carbon =

Hydrogen =

Empirical formula of the hydrocarbon is .

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying