How many moles of o2 are needed to completely react with 4.0 moles of c2h6o?

Answer 1

Q: 2C2H6 plus and ?O2 yields 4CO2 plus 6H2O

First balnce this equation for oxygen (?) (Carbon and Hydrogen are already correctly balanced): right sided O counting 4x2 + 6x1 = 14, so left sided there should be also 14 atoms O or 14/2 = 7 moleecules O2

2C2H6 + 7O2 --> 4CO2 + 6H2O

Then divide both sides by 7 and multiply by 5 (7*5/7 O2 and 4*5/7 CO2) to find -->

A: 5 mole O2 will yield (20/7=) 2.86 mole CO2

Answer 2

Five moles of O2 are needed to react with 2.00 moles C2H2. The symbol O2 stands for Oxygen, and C2H2 stands for acetylene.

Answer 3

I assume you mean this reaction.

2H2 + O2 -> 2H2O

2.0 moles H2 (1 mole O2/2 mole H2)

= 1.0 moles O2 needed

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Answer 4

Write and balance the equation:

C2H6O + 3 O2 --> 2 CO2 + 3 H2O

(3moles O2 / 1 mole C2H6O) x 4 mol C2H6O = 12 moles O2

Answer 5

7.2 mol of oxygen gas.

Answer 6

1.00 mole