C3H6O + 4 O2 �¨ 3 CO2 + 3 H2O how many coefficients?

There are 4 coefficients which add to 11.

To balance the chemical equation, we need to assign coefficients to each compound so that the number of atoms for each element is the same on both sides of the equation.

Let's break down the equation and count the number of atoms for each element:

On the left side of the equation:
- Carbon (C): 3 atoms from C3H6O
- Hydrogen (H): 6 atoms from C3H6O
- Oxygen (O): 2 atoms from C3H6O

On the right side of the equation:
- Carbon (C): 3 atoms from 3CO2
- Hydrogen (H): 6 atoms from 3H2O
- Oxygen (O): 9 atoms from 4O2 + 3H2O

To balance the equation, we need to adjust the coefficients. Here's how you can do it step by step:

1. Balance the number of carbon atoms first:
Since there are 3 carbon atoms on the left side and 3 carbon atoms on the right side, the coefficient for CO2 should be 1.

C3H6O + 4 O2 �¨ 3 CO2 + 3 H2O

2. Balance the number of hydrogen atoms:
Since there are 6 hydrogen atoms on the left side and 6 hydrogen atoms on the right side, there is no need for adjustment.

C3H6O + 4 O2 �¨ 3 CO2 + 3 H2O

3. Balance the number of oxygen atoms:
On the left side, there are 2 oxygen atoms from C3H6O and 4 oxygen atoms from O2, totaling 6 oxygen atoms.
On the right side, there are 6 oxygen atoms from 3CO2 and 3 oxygen atoms from 3H2O, totaling 9 oxygen atoms.

To balance the oxygen atoms, we need to adjust the coefficient for O2. Since there are 4 oxygen atoms per O2, we need 4 O2 molecules on the left side to yield 8 oxygen atoms.

C3H6O + 4 O2 �¨ 3 CO2 + 3 H2O

Now, the equation is balanced, and the coefficients are as follows:
- C3H6O: 1
- O2: 4
- CO2: 3
- H2O: 3

Therefore, there are a total of 4 coefficients in the balanced equation.