how do you balance equations?

http://misterguch.brinkster.net/eqnbalance.html

thanks!

Balancing equations involves adjusting the coefficients in front of the chemical formulas so that the number of atoms of each element on both sides of the equation is equal. Here's a step-by-step guide to help you:

1. Start by writing the unbalanced equation. For example, let's take the equation:
H₂ + O₂ → H₂O

2. Count the number of each type of atom on both sides of the equation. In this case, we have:
On the left side: 2 hydrogen atoms (H) and 2 oxygen atoms (O)
On the right side: 2 hydrogen atoms (H) and 1 oxygen atom (O)

3. Begin balancing the equation by adjusting the coefficients (whole numbers in front of the formulas).

4. Start with the element that appears in the fewest places. Here, we have only one oxygen atom on the right side, but two on the left side. To balance the oxygen atoms, we need to add a coefficient of 2 in front of H₂O on the right side:
H₂ + O₂ → 2H₂O

5. Check the atoms again. Now we have:
On the left side: 2 hydrogen atoms (H) and 2 oxygen atoms (O)
On the right side: 4 hydrogen atoms (H) and 2 oxygen atoms (O)

6. Next, balance the hydrogen atoms by adding a coefficient of 2 in front of H₂ on the left side:
2H₂ + O₂ → 2H₂O

7. Finally, check the atoms again to make sure they are balanced:
On the left side: 4 hydrogen atoms (H) and 2 oxygen atoms (O)
On the right side: 4 hydrogen atoms (H) and 2 oxygen atoms (O)

By following these steps and adjusting the coefficients, you can balance any chemical equation. It's important to note that you should never change the subscripts within a chemical formula, as this would change the compound being represented.