Question

Use the equation to answer the question.

CH4+2O2→CO2+2H2O

If you change the 2 in front of 2O2
to a 3, what will be the change in the results on the right side of the equation?

(1 point)
Responses

Nothing changes in the equation
Nothing changes in the equation

There is an extra O2
molecule left over
There is an extra cap o sub 2 molecule left over

There are now 3 H2O
molecules
There are now 3 cap h sub 2 cap o molecules

There are now 3 CO2
molecules

Answer 1

If you change 2O2 to 3O2 without changing the right side, the left has 3×2 = 6 O atoms while the right still has 4 O atoms (CO2 has 2, 2 H2O has 2). So there would be 2 extra O atoms — i.e. one extra O2 molecule left over.