IcePanda1021
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PLEASE HELP ASAP!!!!!!!!!! WILL GIVE BRAINLIEST TO CORRECT ANSWER!
Read the given chemical reaction.
C2H6 + O2 → CO2 + H2O
How many moles of H2O are produced during the complete combustion of 1.4 moles of C2H6?

A. 5.6 moles
B. 2.8 moles
C. 7.0 moles
D. 4.2 moles

Relax

Respuesta :

Balance your chemical reaction first. Start by balancing carbon so you have 2 carbons on both sides.

C2H6 + O2 —> 2CO2 + H2O

Now balance your hydrogen so you have 6 hydrogens on both sides.

C2H6 + O2 —> 2CO2 + 3H2O

Now balance your oxygens. You have 7 oxygens on the right and 2 on the left, so multiply O2 by 3.5.

C2H6 + 3.5O2 —> 2CO2 + 3H2O

However, you can’t have a decimal in a coefficient. So, multiply everything by two.

2C2H6 + 7O2 —> 4CO2 + 6H2O

Now use your mole ratio of 6 mol H2O for every 2 mol of C2H6 to solve.

1.4 mol C2H6 • 6 mol H2O / 2 mol C2H6 = 4.2 mol H2O

D) 4.2 moles